| 其他書名 | A Compendium of Outdoor Laboratories in Utah, Idaho, and Montana |
| 出版 | U.S. Department of Agriculture, Forest Service, Intermountain Research Station, 1996 |
| URL | http://books.google.com.hk/books?id=PKjQsepCg6QC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |