其他書名 | Time of Planting, Seed Sources, Varieties, Irrigation, Fertilizers, Time of Harvest, and Storage of the Spring Crop |
出版 | Oklahoma Agricultural and Mechanical College, Agricultural Experiment Station, 1941 |
URL | http://books.google.com.hk/books?id=nGtLAQAAMAAJ&hl=&source=gbs_api |