Guidelines for precommercial thinning of Douglas-fir
By: Donald L. Reukema.
Series: USDA Forest Service general technical report PNW -- 30.
Publisher: Pacific Northwest Research Station, U.S. Dept. of Agriculture, Forest Service
Published: 1975
Place of publication: Portland Or
Language: eng
Number of pages: 10
Subjects: Douglas fir -- Thinning.
Notes: Cover title.

Also issued online.