| 其他書名 | Address by Sir Emrys Jones, Director-General of ADAS at the Royal Agricultural College, Cirencester on 10th January 1972 |
| 出版 | Ministry of Agriculture, Fisheries and Food, 1972 |
| URL | http://books.google.com.hk/books?id=vg8lyQEACAAJ&hl=&source=gbs_api |