Howse, G. M., P. D. Syme, H. L. Gross, D. T. Myren, and M. J. Applejohn. 1981. Forest insect and disease conditions in Ontario, 1980. Canada Department of the Environment, Canadian Forestry Service, Great Lakes Forest Research Centre, Information Report O-X-327. 50 p.
Howse et al. 1981
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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