Canadian Forest Service Publications
Annual report of the forest insect and disease survey, 1973: Ontario Region. 1974. Sippell, W.L.; Rose, A.H.; Gross, H.L. Department of the Environment, Canadian Forestry Service. Ottawa,Ontario. Pages 52-69.
Issued by: Great Lakes Forestry Centre
Catalog ID: 37041
Availability: PDF (request by e-mail)