Wyckoff, S. N., C. Hartley, and L. W. Orr. 1947. Protection against forest insects and diseases in the United States. United States Department of Agriculture, Forest Service, Reappraisal of the Forest Situation, No. 5 (processed report). 39 p.
Wyckoff et al. 1947
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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