Degree-day accumulation related to the phenology of Douglas-fir tussock moth and white fir during five seasons of monitoring in southern Oregon
By: Boyd E. Wickman
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note PNW -- 392
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1981
Place of publication: Portland, Or
Language: eng
Number of pages: 10
Subjects: Douglas fir tussock moth; Phenology -- Oregon
Notes: Caption title

"June 1981."

Bibliography: p. 9-10