Selection and propagation of highly graft-compatible Douglas-fir rootstocks, a case history
By: Donald L. Copes.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note PNW -- 377.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1981
Place of publication: [Portland, Or.?]
Language: eng
Subjects: Douglas fir; Grafting; Roots (Botany)
Notes: Caption title.

"March 1981."

Bibliography: p. 8.