| Type |  Book |
| ชื่อเรื่อง | Ozark-Ouachita highlands assessment : summary report / [William F. Pell, Assessment team leader and compiler] |
| พิมพลักษณ์ | Asheville, N.S. : U.S. Dept. of Agriculture, Forest Service, Southern Research Station, [1999] |
| รูปเล่ม | 56 p. : ill., maps |
| หัวเรื่อง | Air quality |
| | Animal populations |
| | Ecological assessment (Biology) |
| | Endangered species |
| | Environmental quality |
| | Plant populations |
| | Social history |
| | Water quality |