Differential defoliation of neighboring Douglas-fir trees by western spruce budworm
By: G. I. McDonald
Contributors: Intermountain Forest and Range Experiment Station (Ogden, Utah)
Series: Research note INT -- 306
Publisher: U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station
Published: 1981
Place of publication: Ogden, Utah
Language: eng
Number of pages: 10
Subjects: Western spruce budworm; Douglas fir -- Diseases and pests
Notes: "April 1981."

Bibliography: p. 9-10