Canadian Forest Service Publications
Defoliation of Douglas-fir in the vicinity of Salmon Arm. 1972. Cottrell, C.B.; Ross, D.A. Environment Canada, Canadian Forestry Service, Pacific Forest Research Centre, Victoria, BC. FIDS Pest Report July, 1972.
Available from: Pacific Forestry Centre
Catalog ID: 30460
Series: FIDS Report (CFS)