| 其他書名 | Proceedings of a Research Conference, June 1986 |
| 出版 | U.S. Department of Agriculture, Economic Research Service, International Economics Division, 1987 |
| URL | http://books.google.com.hk/books?id=E84OsDgmRcUC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |