Canadian Forest Service Publications
Balsam twig aphid in British Columbia. 1971. Dawson, A.F. Environment Canada, Canadian Forestry Service, Pacific Forest Research Centre, Victoria, BC. Pest Leaflet No. 36.
Year: 1971
Available from: Pacific Forestry Centre
Catalog ID: 28356
Language: English
Series: Forest Pest Leaflet (PFC - Victoria)
CFS Availability: PDF (download)