| 其他書名 | Presented by the U.S. Department of Agriculture and the Agency for International Development in Cooperation with U.S. Universities |
| 出版 | U.S. Department of Agriuclute, Economic Research Service, Foreign Development Division, International Training Office, 1976 |
| URL | http://books.google.com.hk/books?id=l8ZAXgx1nvYC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |