Collis, D.G.
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Damage appraisal cruises in spruce budworm defoliated stands of Douglas-fir in 1977
Collis, D.G.; van Sickle, G.A.
Year: 1978
Catalog ID: 1853
Issued by: Pacific Forestry Centre
Availability: PDF (download)
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Hemlock needle miner infestation on northern Vancouver Island
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Line-throwing gun and cutter for obtaining branches from tree crowns
Year: 1973
Catalog ID: 28602
Issued by: Pacific Forestry Centre
Availability: PDF (request by e-mail)
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Rhabdocline needle cast of Douglas-fir in British Columbia
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Evaluation of the tree-beating method for sampling defoliation forest insects
Harris, J.W.E.; Collis, D.G.; Magar, K.M.
Year: 1972
Catalog ID: 29205
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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A hemlock needle miner in British Columbia
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Status of the spruce beetle in British Columbia, 1969
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Dothistroma needle blight of pines in British Columbia
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Mountain pine beetle damage to western white pine on Vancouver Island
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Status of the balsam woolly aphid, Adelges Piceae (Ratz.), in British Columbia, 1965
Harris, J.W.E.; Allen, S.J.; Collis, D.G.; Harvey, E.G.
Year: 1966
Catalog ID: 25786
Issued by: Pacific Forestry Centre
Availability: PDF (download)
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The balsam woolly aphid, Adelges piceae (Ratz.) in British Columbia, 1964
Harris, J.W.E.; Ruppel, D.H.; Allen, S.J.; Collis, D.G.
Year: 1964
Catalog ID: 23991
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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The green-striped forest looper on Vancouver Island
Silver, G.T.; Collis, D.G.; Alexander, N.E.; Allen, S.J.
Year: 1962
Catalog ID: 23889
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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A new record of Cordyceps militaris (Fr.) Link. in B.C
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Prince Rupert Forest District