Ciesla, W. M., M. D. McGregor, and W. E. Bousfield. 1971. Forest insect conditions in the Northern Region, 1970. United States Department of Agriculture, Forest Service, Division of State and Private Forestry, Report for 1971. 12 p.
Ciesla et al. 1971
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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