Ringold, G. B., P. J. Gravelle, D. Miller, M. M. Furniss, and M. D. McGregor. 1975. Characteristics of Douglas-fir beetle infestation in northern Idaho resulting from treatment with Douglure. United States Department of Entomology, Forest Service, Intermountain Forest and Range Experiment Station, Research Note INT-189. 10 p.
Ringold et al. 1975
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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