| 其他書名 | Progress Report 1 to the USDI, Bureau of Land Management, Salt Lake City, Utah |
| 出版 | U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1980 |
| URL | http://books.google.com.hk/books?id=PIGJ0AEACAAJ&hl=&source=gbs_api |