Sippell, W.L.
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A proposed long-term management strategy for the spruce budworm in North America. 1984. Sippell, W.L. Paper presented to Eastern Spruce Budworm Council. 17-18 April 1984, Burlington, Vermont. 28 p.
Year: 1984
Catalog ID: 38636
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Évaluation continue du tableau changeant des dommages causés par la tordeuse des bourgeons de l’épinette au Canada. 1984. Sippell, W.L. Environnement Canada, Service canadien des forêts, Centre de recherches forestières des Grands Lacs, Sault Ste. Marie, Ontario. 35 p.
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Planning now to reduce, postpone or prevent the next spruce budworm outbreak. 1984. Sippell, W.L. Pages 59-67 in D.G. Grimble and D.R. Kucera, editors. Proceedings: New and Improved Techniques for Monitoring and Evaluating Spruce Budworm Populations, September 13-15, 1983, Burlington, Vermont, USA. The Station, Broomall, Pennsylvania, USA, USDA Forest Service, General Technical Report NE 88.
Year: 1984
Catalog ID: 22399
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Historical records suggest a new international strategy of management for the spruce budworm in North America. 1984. Sippell, W.L. Pages 140-141 in Recent Advances in Spruce Budworms Research. Proceedings of the CANUSA Spruce Budworms Research Symposium, September 16-20, 1984, Bangor, Maine, USA. Canadian Forestry Service, Headquarters, Ottawa.
Year: 1984
Catalog ID: 22398
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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A review of the spruce budworm and its outbreak history. 1983. Sippell, W.L. Pages 17-25 in C.J. Sanders and J.R. Carrow, editors. The Spruce Budworm Problem in Ontario: Real or Imaginary? Proceedings of a symposium, September 14-16, 1982, Timmins, Ontario. Canadian Forestry Service, Forest Pest Management Institute, Sault Ste. Marie, Ontario, COJFRC Symposium Proceedings O-P 11. 116 p.
Year: 1983
Catalog ID: 22397
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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A newly-recognized characteristic of eruptions of the spruce budworm in Ontario. 1982. Sippell, W.L. Page 7 in Habitat Manipulation and Outbreak Characteristics of the Spruce Budworm. Symposium Proceedings 29 November-3 December 1982. Joint ESA, ESC and ESO Annual meeting.
Year: 1982
Catalog ID: 38637
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Annual report of the forest insect and disease survey, 1976: Ontario region. 1978. Sippell, W.L.; Rose, A.H.; Gross, H.L. Department of the Environment. Ottawa, Ontario Pages 55-69.
Sippell, W.L.; Rose, A.H.; Gross, H.L.
Year: 1978
Catalog ID: 37044
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Insects and diseases important in plantation establishment.1977. Sippell, W.L. Pages 96-104 in R.F. Sutton, editor. Plantation Establishment Symposium 21-23 September 1976, Kirkland Lake, Ontario. Department of the Environment, Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, Ontario. Symposium Proceedings O-P-5. 123 p. + appendix.
Year: 1977
Catalog ID: 38639
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Spruce budworm associated tree mortality in northeastern Ontario, 1972-76. 1977. Sippell, W.L. Canada Department of Fisheries and the Environment, Great Lakes Forest Research Centre, Sault Ste. Marie, Ontario. 3p.+ tables.
Year: 1977
Catalog ID: 38638
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Another plague of forest tent caterpillars. 1977. Sippell, W.L.; Rose, A.H. Forest Insect and disease Survey Unit, Canadian Forestry Service. Great Lakes Forest Research Centre, Sault Ste. Marie, Ontario. 8p.
Year: 1977
Catalog ID: 38446
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Forest insect and disease conditions in Ontario. 1977. Sippell, W.L.; McDowall, L.L. Forestry Bulletin Spring Issue 1977. 3p.
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The 1976 spruce budworm situation in Ontario. 1977. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, ON. Information Report O-X-260. 85p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1977
Catalog ID: 8937
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Forest insect and disease conditions in Ontario. 1976. Sippell, W.L.; McDowall, L.L. Environment Canada, Forestry Service. Great Lkes Forest Research Centre, Sault Ste. Marie, Ontario. Forestry Bulletin June-July 1976. 10p.
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Annual report of the forest insect and disease survey, 1975: Ontario region. 1976. Sippell, W.L.; Gross, H.L.; Rose, A.H. Fisheries and Environment Canada, Canadian Forestry Service. Ottawa, Ontario.Pages 53-67.
Sippell, W.L.; Gross, H.L.; Rose, A.H.
Year: 1976
Catalog ID: 37043
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Forest insect and disease conditions in Ontario. 1976. Sippell, W.L.; McDowall, L.L. Forestry Bulletin August-October, 1976.8p.
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Forest insect and disease conditions in Ontario. 1976. Sippell, W. L.; McDowall, L.L. Forestry Bulletin May 1976. 4p.
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The 1975 spruce budworm situation in Ontario. 1976. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, ON. Information Report O-X-250. 73 p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1976
Catalog ID: 8927
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Forest insect and disease conditions in Ontario. 1975. Sippell, W.L.; McDowall, L.L. Environment Canada, Forestry Service. Great Lakes Forest Research Centre, Sault Ste. Marie, Ontario. Forestry Bulletin June - July. 12p.
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Annual report of the forest insect and disease survey, 1974: Ontario region. 1975. Sippell, W.L.; Rose, A.H.; Gross, H.L. Department of the Environment, Canadian Forestry Service. Pages 57-74.
Sippell, W.L.; Rose, A.H.; Gross, H.L.
Year: 1975
Catalog ID: 37042
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Forest insect and disease conditions in Ontario. 1975. Sippell, W.L.; McDowall, L.L. Forestry Bulletin August - September 1975. 9p.
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Forest insect and disease conditions in Ontario. 1975. Sippell, W.L.; McDowall, L.L. Forestry Bulletin May 1975. 6p.
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The 1974 spruce budworm situation in Ontario. 1975. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, ON. Information Report O-X-228. 48 p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1975
Catalog ID: 8905
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Forest insect and disease conditions in Ontario. 1974. Sippell, W.L.; McDowall, L.L. Forestry Bulletin August-September 1974. 8p.
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Forest insect and disease conditions in Ontario. 1974. Sippell, W.L.; McDowall, L.L. Forestry Bulletin June-July 1974. 11p.
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Forest insect and disease conditions in Ontario. 1974. McDowall, L.L.; Sippell, W.L. Forestry Bulletin May 1974. 3p.
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The 1973 spruce budworm situtation in Ontario. 1974. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, ON. Information Report O-X-193. 42 p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1974
Catalog ID: 8873
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Annual report of the forest insect and disease survey, 1973: Ontario Region. 1974. Sippell, W.L.; Rose, A.H.; Gross, H.L. Department of the Environment, Canadian Forestry Service. Ottawa,Ontario. Pages 52-69.
Sippell, W.L.; Rose, A.H.; Gross, H.L.
Year: 1973
Catalog ID: 37041
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Annual report of the forest insect and disease survey, 1972: Ontario region. 1973. Sippell, W.L.; Gross, H.L.; Rose, A.H. Pages 54-73. Department of the Environment, Canadian Forestry Service.
Sippell, W.L.; Gross, H.L.; Rose, A.H.
Year: 1973
Catalog ID: 37040
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Forest insect and disease conditions in Ontario. 1973. McDowall, L.L.; Sippell, W.L. Forestry Bulletin August-September 1973. 6p.
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Forest insect and disease conditions in Ontario. 1973. McDowall, L.L.; Sippell, W.L. Forestry Bulletin August 1973. 11p.
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Forest insect and disease conditions in Ontario.1973. McDowall, L.L.; Sippell, W.L. Forestry Bulletin May 1973. 6p.
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The 1972 spruce budworm situation in Ontario. 1973. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Canadian Forestry Service, Sault Ste. Marie, ON. Information Report O-X-173. 39 p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1973
Catalog ID: 8858
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Annual report of the forest insect and disease survey, 1971: Ontario region. 1972. Sippell, W.L.; Rose, A.H.; Gross, H.L. Pages 53-72. Department of the Environment, Canadian Forestry Service.
Sippell, W.L.; Rose, A.H.; Gross, H.L.
Year: 1972
Catalog ID: 37038
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Forest insect and disease conditions in Ontario. 1972. McDowall, L.L.; Sippell, W.L. Forestry Bulletin August-September 1972. 8p.
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The 1971 spruce budworm situation in Ontario. 1972. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, ON. Information Report O-X-163. 51 p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1972
Catalog ID: 8848
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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The eastern pine-shoot borer, Eucosma Gloriola (Lepidoptera : Tortricidae), in North America. 1971. DeBoo, R.F.; Sippell, W.L.; Wong, H.R. Canadian Entomologist 103(10): 1473-1486.
DeBoo, R.F.; Sippell, W.L.; Wong, H.R.
Year: 1971
Catalog ID: 31147
Issued by: Northern Forestry Centre
Availability: Order paper copy (free), PDF (request by e-mail)
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The spruce budworm situation in Ontario, 1970. 1971. Howse, G.M.; Harnden, A.A.; Sippell, W.L. Government of Canada, Department of Fisheries and Forestry, Forest Research Laboratory, Ontario Region. Information Report O - X-147. 41 p.
Howse, G.M.; Harnden, A.A.; Sippell, W.L.
Year: 1971
Catalog ID: 29842
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Annual report of the forest insect and disease survey: Ontario Region. 1970. Sippell, W.L.; Gross, H.L.; Rose, A.H.Pages 52-71. Canada Department of Fisheries and Forestry, Canadian Forestry Service.
Sippell, W.L.; Gross, H.L.; Rose, A.H.
Year: 1970
Catalog ID: 37036
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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The current spruce budworm situation in northeastern Ontario. 1970. Sippell, W.L.; Harnden, A.A. Government of Canada, Department of Fisheries and Forestry, Ontario Region, Sault Ste. Marie, ON. Information Report O-X-135. 13 p.
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Annual report of the Forest Insect and Disease Survey: Ontario Region. 1969. Sippell, W.L.; Rose, A.H.; Gross, H.L. Pages 52-71 in Annual Report of the Forest Insect and Disease Survey. Canada Department of Fisheries and Forestry, Canadian Forestry Service.
Sippell, W.L.; Rose, A.H.; Gross, H.L.
Year: 1969
Catalog ID: 37034
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Annual report of the forest insect and disease survey: Ontario region. 1968. Sippell, W.L.; Gross, H.L.; Rose, A.H. Canada Department of Fisheries and Forestry, Forestry Branch. p 53-78.
Sippell, W.L.; Gross, H.L.; Rose, A.H.
Year: 1968
Catalog ID: 37033
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Annual report of the forest insect and disease survey: Ontario Region, 1967. Sippell, W.L.; Rose, A.H.; Larsen. M.J. Department of Forestry and Rural Development, Forestry Branch. Forest Research Laboratory, Sault Ste. Marie, Ontario. 26p.
Sippell, W.L.; Rose, A.H.; Larsen, M.J.
Year: 1967
Catalog ID: 37541
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Annual report of the forest insect and disease survey, 1966. Sippell, W.L.; Dance, B.W.; Rose, A.H. Forest Research Laboratory, Sault Ste. Marie and Maple, Ontario 26p.
Sippell, W.L.; Dance, B.W.; Rose, A.H.
Year: 1966
Catalog ID: 38661
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Use of aircraft in the appraisal of forest insect and disease damage. 1966. Sippell, W.L. Woodlands Review Section 2380(F-3):588-591.
Year: 1966
Catalog ID: 38642
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Highlights of forest insect conditions in Ontario in 1965. 1966. Sippell, W.L. Proceedings of the Entomological Society of Ontario 96:6-11.
Year: 1966
Catalog ID: 38641
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Distribution of cocoon parasite of the European pine sawfly, Neodiprion sertifer (Geoffroy) in southern Ontario. 1966. Rose, A.H.; Sippell, W.L. Canadian Entomologist 98(1):40-45.
Year: 1966
Catalog ID: 38437
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Ontario's tent caterpillar problem. 1965. Sippell, W.L. Ontario Forestry Association, Toronto, Ontario. The Ontario Tree Farmer 6(2):3-5.
Year: 1965
Catalog ID: 38654
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Annual report of the forest insect and disease survey, 1965. Sippell, W.L.; Dance, B.W.; Rose, A.H. Forest Research Laboratory, Sault Ste. Marie and Maple, Ontario 23p.
Sippell, W.L.; Dance, B.W.; Rose, A.H.
Year: 1965
Catalog ID: 38439
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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An intensive survey of spruce budworm infestations in the Geraldton district, 1962. 1964. Sippell, W.L. Department of Forestry, Forest Entomological Pathology Branch, Forest Insect Laboratory, Sault Ste. Marie, Ontario. Information Report 9 p. + figure.
Year: 1964
Catalog ID: 38653
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect conditions, 1964. 1964. Sippell, W.L.; MacDonald, J.E.; Rose, A.H. Pages 51-64 in Annual Report of the Forest Insect and Disease Survey, 1963. Canadian Department of Agriculture, Forest Biology Division, Ottawa, Ontario. 139 p.
Sippell, W.L.; MacDonald, J.E.; Rose, A.H.
Year: 1964
Catalog ID: 37853
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Forest insect survey. September-October Interim Report. 1964. MacDonald, J.E.; Sippell, W.L. Canadian Department of Forestry, Forest Insect Laboratory, Sault Ste. Marie, Ontario. September-October, 1964. Interim Report 5p.
MacDonald, J.E.; Sippell, W.L.
Year: 1964
Catalog ID: 37852
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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A review of the Dutch elm disease: vectors of the disease. 1964. Finnegan, R. J.; Sippell, W.L. BioMonthly Progress Report July-Aug. 20(4):3-4. Canada Department of Forestry Forest Entomology and Pathology Branch.
Year: 1964
Catalog ID: 36699
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Vectors of the Dutch elm disease. 1964. Finnegan, R.J.; Sippell, W.L. Bi-monthly Progress Report 20(4): 3-4.
Year: 1964
Catalog ID: 15171
Issued by: Laurentian Forestry Centre
Availability: Not available through the CFS (click for more information).
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Interim report of the forest insect survey. May 1963. MacDonald, J.E.; Sippell, W.L. Interim Report of the Forest Insect Survey Ontario. 2p.
MacDonald, J.E.; Sippell, W.L.
Year: 1963
Catalog ID: 37872
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect conditions, 1964. 1964. Sippell, W.L.; MacDonald, J.E.; Rose,A.H. Pages 51-64 in Annual Report of the Forest Insect and Disease Survey, 1963. Canadian Department of Agriculture, Forest Biology Division, Ottawa, Ontario. 139 p.
Sippell, W.L.; MacDonald, J.E.; Rose, A.H.
Year: 1963
Catalog ID: 37854
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Outbreaks of the forest tent caterpillar, Malacosoma disstria Hbn., a periodic defoliator of broad-leaved trees in Ontario. 1962. Sippell, W.L. Canadian Entomologist 94(4):408-416.
Year: 1962
Catalog ID: 38652
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect conditions, 1962. 1962. Sippell, W.L.; MacDonald, J.E.; Rose, A.H. Pages 52-65 in Annual Report of the Forest Insect and Disease Survey, 1962. Canadian Department of Agriculture, Forest Biology Division, Ottawa, Ontario. 134 p.
Sippell, W.L.; MacDonald, J.E.; Rose, A.H.
Year: 1962
Catalog ID: 37851
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Scolytid vectors of the Dutch elm disease in Ontario. 1961. Watson,W.Y.; Sippell, W.L. Canadian Entomologist 93(5):403-405.
Year: 1961
Catalog ID: 38651
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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The life history, parasites, and economic status of the larch shoot moth, Argyresthia laricella Kft. (Lepidoptera, Yponomeutidae), and comparisons with A. laevigatella H.-S. 1961. Eidt, D.C.; Sippell, W.L. Canadian Entomologist 93(1):7-24.
Year: 1961
Catalog ID: 38650
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Key to the puparia of common dipterous parasites of the forest tent caterpillar, Malacosoma disstria Hbn., in Ontario. 1961. Sippell, W.L. Canadian Entomologist 93(6):433-436.
Year: 1961
Catalog ID: 38649
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Extension of infestations of the European pine sawfly, Neodiprion sertifer(Geoff.). 1961. Sippell, W.L. Bi-monthly Progress Report 17(5).
Year: 1961
Catalog ID: 38648
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Extension of infestations of the European pine sawfly, Neodiprion sertifer(Geoff.). 1961. Sippell, W.L. Bi-monthly Progress Report 17(5).
Year: 1961
Catalog ID: 38647
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey, 1961. Sippell, W.L.; MacDonakd, J.E.; Rose, A.H. Pages 55-72 in Annual Report of the Forest Insect and Disease Survey, 1961. Canadian Department of Agriculture, Forest Biology Division, Ottawa, Ontario. 136 p.
Sippell, W.L.; MacDonald, J.E.; Rose, A.H.
Year: 1961
Catalog ID: 37850
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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The Nantucket pine tip moth, Rhuacionia frustrana. 1961. Sippell, W.L.; Lindquist, O.H. Bi-Monthly Progress Report 17(5):1.
Sippell, W.L.; Lindquist, O.H.
Year: 1961
Catalog ID: 37601
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Bud-miners, Argyresthia spp., on spruce and balsam fir in Ontario. 1961. Lindquist, O.H.; Sipple, W.L. Bi-Monthly Progress Report 1(10):1.
Lindquist, O.H.; Sippell, W.L.
Year: 1961
Catalog ID: 37598
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey,1960. 1960. Sippell, W.L.; MacDonald, J.E.; Rose, A.H. Pages 45-63 in Annual Report of the Forest Insect and Disease Survey, 1960. Canadian Department of Agriculture, Forest Biology Division, Ottawa, Ontario. 121 p.
Sippell, W.L.; MacDonald, J.E.; Rose, A.H.
Year: 1960
Catalog ID: 37849
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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rovince of Ontario: Forest insect survey, 1959. Sippell, W.L.; MacDonald, J.E.; Rose, A.H. Pages 44-62 in Annual Report of the Forest Insect and Disease Survey, 1959. Canadian Department of Agriculture, Forest Biology Division, Ottawa, Ontario. 121 p.
Sippell, W.L.; MacDonald, J.E.; Rose, A.H.
Year: 1959
Catalog ID: 37848
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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New distribution records and notes on an Arborvitae leaf-miner in Ontario. 1959. Lindquist, O.H.; Sippell, W.L. Bi-Monthly Progress Report 15(4):1.
Lindquist, O.H.; Sippell, W.L.
Year: 1959
Catalog ID: 37595
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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First records of two pine sawflies in Michigan. 1958. Wallace, D.R.; Sippell, W.L. Journal of Economic Entomology 51(2):125.
Year: 1958
Catalog ID: 38467
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey,1958. 1958. Sippell, W.L.; MacDonald, J.E. Pages 38-56 in Annual Report of the Forest Insect and Disease Survey, 1958. Canadian Department of Agriculture, Forest Biology Division, Science Service, Ottawa, Ontario. 114 p
Sippell, W.L.; MacDonald, J.E.
Year: 1958
Catalog ID: 37847
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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A tube maker on red pine in Ontario. 1958. Lindquist, O.H.; Harnden, A.A.; Sippll, W.L. Bi-Monthly Progress Report 14(2):1.
Lindquist, O.H.; Harnden, A.A.; Sippell, W.L.
Year: 1958
Catalog ID: 37590
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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A moth attacking larch shoots in eastern Canada. 1957. Eidt, D.C.; Sippell, W.L. Bi-monthly Progress Report 14(1).
Year: 1957
Catalog ID: 38662
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey, 1957. Sippell, W.L.; MacDonald, J.E. Pages 32-48 in Annual Report of the Forest Insect and Disease Survey, 1957. Canadian Department of Agriculture, Forest Biology Division, Science Service, Ottawa, Ontario. 94 p.
Sippell, W.L.; MacDonald, J.E.
Year: 1957
Catalog ID: 37846
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Damage to jack pine by the pine tortoise scale. 1656. Sippell, W.L. Bi-monthly Progress Report 12(5.)
Year: 1956
Catalog ID: 38663
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey, 1956. 1956. Sippell, W.L.; MacDonald, J.E.; Wallace, D.R. Pages 39-55 in Annual Report of the Forest Insect and Disease Survey, 1956. Canadian Department of Agriculture, Forest Biology Division, Science Service, Ottawa, Ontario. 95 p.
Sippell, W.L.; MacDonald, J.E.; Wallace, D.R.
Year: 1956
Catalog ID: 37845
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Effects of weather on the forest tent caterpillar Malacosoma disstria Hbn., in central Canada in the spring of 1953. 1955 Blais, J.R.; Prentice, R.M.; Sippell, W.L.; Wallace, D.R.
Blais, J.R.; Prentice, R.M.; Sippell, W.L.; Wallace, D.R.
Year: 1955
Catalog ID: 38646
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey, 1955. 1955. Sippell, W.L.; MacDonald, J.E.; Wallace, D.R. Pages 35-55 in Annual Report of the Forest Insect and Disease Survey, 1955. Canadian Department of Agriculture, Forest Biology Division, Science Service, Ottawa, Ontario. 106 p.
Sippell, W.L.; MacDonald, J.E.; Wallace, D.R.
Year: 1955
Catalog ID: 37844
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Effects of weather on the forest tent caterpillar Malacosoma disstria Hbn., in Central Canada in the spring of 1953. 1955. Blais, J.R.; Prentice, R.M.; Sippell, W.L.; Wallace, D.R. The Canadian Entomologist 87: 1-8.
Blais, J.R.; Prentice, R.M.; Sippell, W.L.; Wallace, D.R.
Year: 1955
Catalog ID: 14891
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey,1954. Sippell, W.L.; MacDonald, J.E.; Wallace, D.R. Pages 46-69 in Annual Report of the Forest Insect and Disease Survey, 1954. Canadian Department of Agriculture, Forest Biology Division, Science Service, Ottawa, Ontario. 135 p.
Sippell, W.L.; MacDonald, J.E.; Wallace, D.R.
Year: 1954
Catalog ID: 37843
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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The forest tent caterpillar in north-western Ontario. 1953. Sippell, W.L. Thunder Bay Timber Operators Association Log Book 4(6):6-7.
Year: 1953
Catalog ID: 38645
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Studies of the responses of the female Aedes mosquito. Part V. The role of visual factors. 1953. Sippell, W.L. Bulletin of Entomological Research 43(4):567-574.
Year: 1953
Catalog ID: 38643
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Province of Ontario: Forest insect survey. 1953. Sippell, W.L.; MacDonald, J.E.; Wallace, D.R. Pages.52-76 in Annual Report of the Forest Insect and Disease Survey, 1953. Canadian Department of Agriculture, Forest Biology Division, Science Service, Ottawa, Ontario. 158 p.
Sippell, W.L.; MacDonald, J.E.; Wallace, D.R.
Year: 1953
Catalog ID: 37839
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Winter rearing of the forest tent caterpillar, Malacosoma disstria Hbn. 1952. Sippell, W.L. Bi-monthly Progress Report 8(4).
Year: 1952
Catalog ID: 38644
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
