| 其他書名 | Proceedings of Symposia Sponsored by the University of California Agricultural Issues Center May 3rd 1990, in Sacramento and June 5th 1990, in Fresno |
| 出版 | Agricultural Issues Center, University of California, 1990 |
| URL | http://books.google.com.hk/books?id=toVRHwAACAAJ&hl=&source=gbs_api |