Two-year results of a west-east transect-provenance test of Douglas-fir in Oregon
By: by Frank Sorensen.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: U.S. Forest Service research note PNW -- 72.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Published: 1967
Place of publication: Portland, Or
Language: eng
Subjects: Douglas fir -- Seeds -- Oregon -- Testing.; Douglas fir -- Oregon -- Seedlings.
Notes: Caption title.

"December, 1967."

Includes bibliographical references (p. 8).