| Type |  Book |
| ชื่อเรื่อง | A digitized systematic classification for ecosystems with an illustrated summary of the natural vegetation of North America / David E. Brown, Charles H. Lowe, and Charles P. Pase |
| ผู้แต่ง | Brown, David E. (David Earl) |
| พิมพลักษณ์ | Fort Collins, Colo. : Forest Service, Rocky Mountain Forest and Range Experiment Station, 1980 |
| รูปเล่ม | 93 p. : ill |
| หัวเรื่อง | Botany --North America --Pictorial works [] |
| | Plant communities --North America [] |
| | Vegetation classification --North America [] |