| 其他書名 | An Account of Activities at the Department's Largest Research Station, at Beltsville, Md |
| 出版 | Agricultural Research Administration, U. S. Department of Agriculture, 1948 |
| URL | http://books.google.com.hk/books?id=dhY_3Lof5m0C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |