开放图书详细信息
| University of California 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 A. S. Packard, jr. With fifteen plates and six hundred and seventy wood-cuts. | ||
| Packard, A. S. | ||
| keywords: Insect pests; Insects; | ||
| Subject:植物学 | ||
| 美国 | ||