Losses associated with Douglas-fir and true fir tops killed by western spruce budworm in eastern Washington
By: Paul E. Aho
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research paper PNW -- 318
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1984
Place of publication: Portland, Or
Language: eng
Subjects: Douglas fir -- Diseases and pests -- Washington (State); Fir -- Diseases and pests -- Washington (State); Defoliation; Western spruce budworm -- Washington (State)
Notes: Distributed to depository libraries in microfiche

"April 1984."

Bibliography: p. 8