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By: United States. Plant Protection Division.Edition:Publication info: Hyattsville, MD, Plant Pest Control Division, Agricultural Research Service, United States Department of Agriculture, [1969]Volume: ARS 81-31Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections:
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By: United States. Plant Protection Division.Edition:Publication info: [Washington, U.S. Govt. Print. Off.], 1970Volume: PA-929Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: