Dillman, R. D., S. S. Chu, B. B. Eav, and J. C. Prill. 1980. A pilot test of high altitude optical bar camera photography to estimate annual mortality of ponderosa pine caused by the mountain pine beetle in Colorado. United States Department of Agriculture, Forest Service, Nationwide Forestry Applications Program, Lyndon B. Johnson Space Center, Houston, Texas, Technical Report. 80 p.
Dillman et al. 1980
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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