Canadian Forest Service Publications
Separation of the European spruce sawfly in America from Gilpinia polytoma (Htg.) (Diprionidae: Hymenoptera) and evidence of its introduction. 1941. Balch, R.E.; Reeks,W.A.; Smith, S.G. Canadian Entomologist 198-203.
Year: 1941
Issued by: Great Lakes Forestry Centre
Catalog ID: 38088
Language: English
Availability: PDF (request by e-mail)