Johnson, D. W., and V. L. M. Creasap. 1978a. Forest insect and disease management annual report: Rocky Mountain Region, 1977. United States Department of Agriculture, Forest Service, Rocky Mountain Region, State and Private Forestry, Lakewood, Colorado. 68 p.
Johnson & Creasap 1978
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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