Canadian Forest Service Publications
Toxicity of insecticides to first-instar larvae of the spruce budmoth, Zeiraphera canadensis Mus. and Free. (Lepidoptera: tortricidae): laboratory and field studies. 1989. Helson, B.V.; De Groot, P.; Turgeon, J.J.; Kettela, E.G. The Canadian Entomologist 121: 81-91.
Issued by: Atlantic Forestry Centre
Catalog ID: 7149
CFS Availability: PDF (request by e-mail)