Bedard, W. D. 1933b. The Douglas-fir beetle, its seasonal history, biology, habits, and control. United States Department of Agriculture, Forest Service, Forest Insect Field Stations, Coeur d'Alene, Idaho. 67 p. (processed).
Bedard 1933
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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