Development of western spruce budworm on Douglas-fir callus tissue
By: Roy C. Beckwith and Barry Goldfarb
Contributors: Goldfarb, Barry; Pacific Northwest Research Station (Portland, Or.)
Series: Research note PNW -- RN-504; Research note PNW -- 504
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
Published: 1991
Place of publication: [Portland, Or. (319 S.W. Pine St., Portland 97208)]
Language: eng
Subjects: Western spruce budworm -- Northwestern States; Douglas fir -- Diseases and pests -- Northwestern States
Notes: Caption title

Distributed to depository libraries in microfiche

"June 1991."

Includes bibliographical references (p. 4-5)