Furniss, M. M., and P. W. Orr. 1970. Douglas-fir beetle (Dendroctonus pseudotsugae). United States Department of Agriculture, Forest Service, Forest Pest Leaflet 5 (revised). 4 p.
Furniss & Orr 1970
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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