| 其他書名 | A Study of Slash Disposal and Cone Opening |
| 出版 | Intermountain Forest and Range Experiment Station, Forest Service, United States Department of Agriculture, 1964 |
| URL | http://books.google.com.hk/books?id=e6C49AgchU8C&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |