Hofacker, T. H., R. C. Loomis, and S. M. Tucker. 1987. Forest insect and disease conditions in the United States, 1986. United States Department of Agriculture, Forest Service, Forest Pest Management, Washington, D.C. 94 p.
Hofacker et al. 1987
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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