Distribution of western spruce budworm egg masses on white fir and Douglas-fir
By: J.M. Schmid and P.A. Farrar
Contributors: Farrar, P. A; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Series: Research paper RM -- 241
Publisher: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1982
Place of publication: Fort Collins, Colo
Language: eng
Subjects: Western spruce budworm -- Eggs; Defoliation; Douglas fir; Fir
Notes: "October 1982"--T.p. verso

Bibliography: p. 7