| Type |  Book |
| ชื่อเรื่อง | Aspen biology, community classification and management in the Blue Mountains / David K. Swanson...[et al.] |
| พิมพลักษณ์ | Portland, OR : U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station ;, 2010 |
| รูปเล่ม | 117 p. : col. ill., col. maps ; 28 cm |
| หัวเรื่อง | Forest management --Blue mountains (Or. and wash.) [] |
| | Populus tremuloides --Conservation --Blue mountains (Or. and wash.) [] |
| | Populus tremuloides --Blue mountains (Or. and wash.) [] |