Crop-tree thinning of ponderosa pine in the Pacific Northwest
By: by James W. Barrett.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note -- PNW-100.; USDA Forest Service research note PNW -- 100.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Forest Service
Published: 1969
Place of publication: [Portland, Or.]
Language: eng
Number of pages: 13
Subjects: Ponderosa pine -- Thinning -- Northwest, Pacific.
Notes: Caption title.

"April 1969."

Includes bibliographical references.