| 其他書名 | U.S. Trends, Breeding, and Progress Since 1960 |
| 出版 | Hoard's Dairyman, 1988 |
| 主題 | Nature / Animals / GeneralTechnology & Engineering / Agriculture / Animal Husbandry |
| ISBN | 09321470469780932147042 |
| URL | http://books.google.com.hk/books?id=3OMqAQAAMAAJ&hl=&source=gbs_api |