开放图书详细信息
Smithsonian Libraries contributed to BHL | ||
Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists, by Alpheus S. Packard, M.D. With fifteen plates and six hundred and seventy wood-cuts. | ||
Packard, A. S. (Alpheus Spring), 1839-1905 | ||
keywords: Insects; Insect pests; Beneficial insects; | ||
Subject:植物学 | ||
美国 |