Cahill, D. B. 1977. Mountain pine beetle. Black Hills of South Dakota and Wyoming, Black Hills National Forest and surrounding federal, state, and private lands. United States Department of Agriculture, Forest Service, Rocky Mountain Region, State and Private Forestry, Biological Evaluation R2-77-5. 3 p.
Cahill 1977
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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