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By: Roth, Adolph R. - United States. Forest Service. - United States. Bureau of Entomology and Plant Quarantine.Edition:Publication info: [Vancouver, Washington], [U.S. Department of Agriculture, Forest Service & Bureau of Entomology and Plant Quarantine], [1938]Volume: 1938Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: