Massey, C. L., N. D. Wygant, and R. I. Washburn. 1950. Tests with ethylene dibromide emulsions for control of the Black Hills beetle in ponderosa pine. United States Department of Agriculture, Bureau of Entomology and Plant Quarantine, Fort Collins, Colorado.
Massey et al. 1950
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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