Publications du Service canadien des forêts

Forest insect and disease conditions in Ontario, 1981. 1982. Howse, G.M.; Gross, H.L.; Syme, P.D.; Myren, D.T.; Meating, J.H.; Applejohn, M.J. Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, Ontario. Information Report O-X-339. 96 p.