Light thinning in century-old Douglas fir
By: by Robert W. Steele.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Forest research notes -- no. 43.; Forest research notes (Portland, Or.) -- no. 43.
Publisher: Pacific Northwest Forest and Range Experiment Station
Published: 1948
Place of publication: Portland, Or
Language: eng
Subjects: Douglas fir -- Thinning.
Notes: Cover title.

"May 18, 1948."

Also issued online.