Pettinger, L. F., and R. E. Dolph. 1967. Forest insect conditions in the Pacific Northwest during 1966. United States Department of Agriculture, Forest Service, Pacific Northwest Region, Insect and Disease Control Branch, Division of Timber Management. 73 p.
Pettinger & Dolph 1967
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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