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: Research paper PNW -- 233.; Research paper PNW -- 233.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Published: 1978
Place of publication: Portland, Or
Language: eng
Number of pages: 47
Subjects: Douglas-fir tussock moth; Fir -- Diseases and pests -- Blue Mountains (Or. and Wash.)
Notes: Bibliography: p. 39.