Estimating defoliation caused by spruce budworm from undamaged shoots
By: Tom T. Terrell
Contributors: Intermountain Forest and Range Experiment Station (Ogden, Utah)
Series: Research note / Intermountain Forest and Range Experiment Station, U.S. Department of Agriculture, Forest Service -- no. 86; Research note (Intermountain Forest and Range Experiment Station (Ogden, Utah)) -- no. 86.
Publisher: Intermountain Forest and Range Experiment Station
Published: 1961
Place of publication: Ogden, Utah
Language: eng
Subjects: Spruce budworm; Defoliation; Douglas fir; Diseases and pests
Notes: Caption title.

"October 1961."