Old growth coast Douglas-fir log grades
Subtitle: a distribution analysis of existing log grades with a new four-grade system
By: M. Wallace Burck.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research note PNW -- 231.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1974
Place of publication: Portland, Or
Language: eng
Subjects: Douglas fir.; Timber -- Grading.
Notes: Caption title.

"June 1974."

Includes bibliographical references (p. 2).