Twenty-one-year development of Douglas-fir stands repeatedly thinned at varying intervals
By: Donald L. Reukema.
Series: USDA Forest Service research paper PNW -- 141.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1972
Place of publication: Portland, Or
Language: eng
Number of pages: 23
Subjects: Douglas fir.; Douglas fir -- Thinning.
Other titles: Twenty one year old development of Douglas-fir stands repeatedly thinned at varying intervals.
Notes: Cover title.

Bibliography: p. 22-23.