Thomson, M. J., and E. L. Houser. 1975. Forest insect and disease surveys in the Northwestern Region of Ontario, 1974. Canada Department of the Environment, Canadian Forestry Service, Great Lakes Forest Research Centre, Information Report O-X-220. 19 p.
Thomson & Houser 1975
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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