Collapse of an outbreak population of the douglas-fir tussock moth, Hemerocampa Pseudotsugata (Lepidoptera: Lymantriidae)
By: by Richard R. Mason and C.G. Thompson.
Contributors: Thompson, C. G.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research notes PNW -- 139.; Research note PNW -- 139.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1971
Place of publication: Portland, Or
Language: eng
Number of pages: 10
Subjects: Douglas-fir tussock moth; Douglas fir -- Diseases and pests -- California, Northern
Notes: "January 1971."

Cover title.

Includes bibliographical references (p. 9-10).