Johson, D. W., and R. D. Averill. 1983. Forest insect and disease conditions in the Rocky Mountain Region, 1982. United States Department of Agriculture, Forest Service, Rocky Mountain Region, Timber, Forest Pest, and Cooperative Forestry Management, Denver Colorado. 42 p.
Johson & Averill 1983
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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