| 其他書名 | Dakota Prairie Grasslands, Nebraska National Forest Units, Thunder Basin National Grassland |
| 出版 | U.S. Department of Agriculture, Forest Service, Northern and Rocky Mountain Regions, 2001 |
| URL | http://books.google.com.hk/books?id=vdVGAAAAYAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |