Downing, G. L., W. M. Ciesla, and J. L. Rauschenberger. 1968. Southern and southeastern states. Forest insect and disease conditions in the United States, 1968. United States Department of Agriculture, Forest Service.
Downing et al. 1968
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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