Canadian Forest Service Publications
Annual report of the forest insect and disease survey: Ontario Region. 1970. Sippell, W.L.; Gross, H.L.; Rose, A.H.Pages 52-71. Canada Department of Fisheries and Forestry, Canadian Forestry Service.
Available from: Great Lakes Forestry Centre
Catalog ID: 37036
CFS Availability: PDF (request by e-mail)
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