| 其他書名 | Maryland's Attempt to Develop an Approvable Program : a Practicum Submitted ... in Partial Fulfillment of the M.S. Degree in Natural Resources |
| 出版 | University of Michigan, 1977 |
| URL | http://books.google.com.hk/books?id=dvlJ3Siw5r8C&hl=&source=gbs_api |