Lawrence, H.D.
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Review of forest health conditions in the northwest region of Ontario.
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Forest health conditions in the northwest region of Ontario 2001.
Biggs, W.D.; Lawrence, H.D.; Lesperance, M.E.
Year: 2002
Catalog ID: 34810
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Results of forest health monitoring in the Southcentral region of Ontario in 1998.
Lawrence, H.D.; Smith, B.E.; Ingram, W.A.; Czerwinski, E.J.
Year: 1998
Catalog ID: 34813
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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The efficacy of single and double applications of a new insect growth regulator, Tebufenozide (RH5992), on Jack pine budworm in Ontario. Information Report O-X-444.
Meating, J.H.; Retnakaran, A.; Lawrence, H.D.; Robinson, A.G.; Howse, G.M.
Year: 1996
Catalog ID: 9123
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Jack pine budworm control operation in Ontario, 1985-1994.
Meating, J.H.; Howse, G.M.; Lawrence, H.D.
Year: 1995
Catalog ID: 37362
Issued by: Great Lakes Forestry Centre
Availability: PDF (request by e-mail)
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Efficacité du dipel 8AF en formule diluée et non diluée dans la lutte contre la spongieuse (Lepidoptera: Lymantriidae) dans le sud de l’Ontario
van Frankenhuyzen, K.; Howard, C.A.; Churcher, J.J.; Howse, G.M.; Lawrence, H.D.
Year: 1989
Catalog ID: 22212
Issued by: Great Lakes Forestry Centre
Availability: Not available through the CFS (click for more information).
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Deposition and efficacy of Dipel 8AF applied diluted and undiluted against the gypsy moth (Lepidoptera: Lymantriidae) in Southeastern Ontario. FPM-X-84.
van Frankenhuyzen, K.; Howard, C.A.; Churcher, J.J.; Howse, G.M.; Lawrence, H.D.
Year: 1989
Catalog ID: 8808
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Results of forest insect and disease surveys in the Central region of Ontario, 1983. Miscellaneous Report 6.
Evans, H.J.; Barnes, C.A.; Lawrence, H.D.; Weir, H.J.
Year: 1984
Catalog ID: 9374
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Results of forest insect and disease surveys in the Algonquin region of Ontario, 1983: forest districts, Parry Sound, Bracebridge, Algonquin Park, Pembroke, Minden and Bancroft
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The 1982 gypsy moth situation in Ontario: General surveys, spray trials and forecasts for 1983. O-X-352.
Meating, J.H.; Lawrence, H.D.; Cunningham, J.C.; Howse, G.M.
Year: 1983
Catalog ID: 9027
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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The 1982 spruce budworm situation in Ontario, Part A: damage and forecasts; Part B: aerial spraying operations. O-X-349.
Meating, J.H.; Lawrence, H.D.; Howse, G.M.; Carrow, J.R.
Year: 1983
Catalog ID: 9024
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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The 1981 spruce budworm situation in Ontario. Part A: Damage and forecasts Part B: Aerial spraying operations. O-X-343.
Meating, J.H.; Lawrence, H.D.; Howse, G.M.; Carrow, J.R.
Year: 1982
Catalog ID: 9018
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
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Results of forest insect and disease surveys in the North Central region of Ontario,1980.
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Results of forest insect and disease surveys in the North Central Region of Ontario, 1979.
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Results of forest insect and disease surveys in the North Central region of Ontario, 1978.
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Forest insect and disease surveys in the North Central region of Ontario, 1977. Foster, H. R.; Lawrence, H. D.
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Forest insect and disease surveys in the North Central region of Ontario, 1976.
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Forest insect and disease surveys in the Algonquin region of Ontario,1975.
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Forest insect and disease surveys in the Algonquin region of Ontario, 1974. O-X-224.
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Forest insect and disease surveys in the Eastern survey region, 1973. O-X-196.
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Forest insect and disease surveys in the Eastern survey region, 1972. (Forest districts: Pembroke, Parry Sound, North Bay, and Swastika). O-X-176.
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Forest insect and disease surveys in the Eastern survey region, 1971. (Forest District: Pembroke, Parry Sound, North Bay, and Swastika). O-X-159.
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Forest insect and disease surveys in the Eastern survey Region, 1970. O-X-143.
