Wert, S., and B. Roettgering. 1967. Aerial survey of insect-caused mortality—operation recorder gathers data quickly, cheaply. United States Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, Research Note PSW-150. 4 p.
Wert & Roettgering 1967
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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