Tree mortality and top-kill related to defoliation by the Douglas-fir tussock moth in the Blue Mountains outbreak
By: Boyd E. Wickman.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.); United States. Forest Service.
Series: USDA Forest Service research paper PNW -- no. 233.; USDA Forest Service research paper PNW -- 233.
Publisher: Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1978
Place of publication: Portland, Or
Language: eng
Number of pages: 47
Notes: Bibliography: p. 39.