| 其他書名 | Evaluation of an Experimental Program |
| 出版 | Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1973 |
| URL | http://books.google.com.hk/books?id=Sw5Zn7AMtGsC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |