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History of population fluctuations and infestations of important forest insects in the Nelson Forest Region 1923-1991. 1992. Unger, L.S. Forestry Canada, Pacific Forestry Centre, Victoria, BC. FIDS Report 92-13.
Year: 1992
Available from: Pacific Forestry Centre
Catalog ID: 31659
Language: English
Series: FIDS Report (CFS)
CFS Availability: PDF (download)