Canadian Forest Service Publications
Annual report of the Forest Insect and Disease Survey: Ontario Region. 1969. Sippell, W.L.; Rose, A.H.; Gross, H.L. Pages 52-71 in Annual Report of the Forest Insect and Disease Survey. Canada Department of Fisheries and Forestry, Canadian Forestry Service.
Issued by: Great Lakes Forestry Centre
Catalog ID: 37034
Availability: PDF (request by e-mail)