Effect of date of cone collection and stratification period on germination and growth of Douglas-fir seeds and seedlings
By: by Frank C. Sorensen
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: PNW research note -- PNW-346; PNW research note -- 346.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1980
Place of publication: Portland, Or
Language: eng
Number of pages: 11
Subjects: Seeds; Seedlings; Germination; Stratification; Douglas fir; Growth
Notes: Caption title.

"February 1980."

Includes bibliographical references (p. 10-11).