Canadian Forest Service Publications
On coniferophagous species of Choristoneura (Lepidoptera: Tortricidae) in North America. IV. Sexual isolation between three species. 1967. Campbell, I.M. Section of Cytology and Genetics, Insect Pathology Research Institute, Department of Forestry and Rural Development, Sault Ste. Marie, Ontario. The Canadian Entomologist 99:482-486.
Issued by: Great Lakes Forestry Centre
Catalog ID: 35223
Availability: PDF (request by e-mail)