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By: Simpson, C. B. (Charles Baird),Edition:Publication info: Washington, D.C, U.S. Dept. of Agriculture, Division of Entomology, 1903Volume: new ser.:no.41 (1903)Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections:
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By: Simpson, C. B. (Charles Baird),Edition:Publication info: Washington, D.C, U.S. Dept. of Agriculture, Division of Entomology, 1902Volume: new ser.:no.35 (1901)Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections:
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By: Simpson, C. B. (Charles Baird), - United States. Division of Entomology. - United States. Department of Agriculture.Edition:Publication info: Washington, D.C, U.S. Dept. of Agriculture, Division of Entomology, 1903Volume: ser.2:no.53Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: