Population density of western spruce budworm as related to stand characteristics in the Bitterroot National Forest
By: Carroll B. Williams, Jr., Patrick J. Shea, Gerald S. Walton.
Contributors: Shea, Patrick J.; Walton, Gerald S.; Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Series: Research paper PSW -- 72.; Research paper PSW -- 72.
Publisher: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1971
Place of publication: Berkeley, Calif
Language: eng
Subjects: Fir -- Diseases and pests -- Montana; Spruce budworm -- Montana; Bitterroot National Forest (Mont.)
Notes: Cover title.

Includes bibliographical references (p. 7-8).