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Smithsonian Libraries contributed to BHL | ||
Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no. 7, on insects injurious to forest and shade trees. By Alpheus S. Packard ... | ||
United States Entomological Commission.@@Packard, A. S. (Alpheus Spring), 1839-1905 | ||
keywords: Diseases and pests; Beneficial insects; Insect pests; Trees; Forest insects; | ||
Subject:植物学 | ||
美国 |