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By: Wygant, Noel D., - United States. Bureau of Entomology and Plant Quarantine. - United States. Forest Service.Edition:Publication info: Fort Collins, Colo, Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1936Volume: 1936Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: Seed & Nursery Catalogs