McGregor, M. D., D. R. Hamel, and R. D. Oakes. 1977a. Evaluation of mountain pine beetle infestations, Thompson River Drainage, Plains District, Lolo National Forest, Montana, 1976. United States Department of Agriculture, Forest Service, Northern Region, Forest Environment Protection, Report 77-5. 5 p.
McGregor et al. 1977
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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