References
- FRANKLIN , J. F. , CROMACK , K. , DENISON , W. , MCKEE , A. , MASER , C. , SEDELL , J. , SWANSON , F. and JUDAY , G. 1981 . “ Ecological characteristics of old-growth Douglas fir forests ” . In Gen. Tech Rep Portland , OR : USDA Forest Service, Pac. NW Forest and Range Exper. Sta. . PNW-118
- MASER , C. and TRAPPE , J. M. 1984 . “ The Seen and Unseen World of the Fallen Tree ” . In Gen. Tech Rep. PNW-164. Portland , OR : USDA Forest Service, PAC. NW Forst and Range Experiment Sta .
- US DEPARTMENT OF THE INTERIOR . 1979 . Bureau of Land Management Unit Resource Analysis—Wildlife Coast Range Salem, OR., US Dept. Inter Bur. Land Manage .