Latest results from the Pringle Falls ponderosa pine spacing study
By: by James W. Barrett.
Series: USDA Forest Service research note PNW -- 209.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1973
Place of publication: Portland, Ore
Language: eng
Number of pages: 22
Subjects: Ponderosa pine -- Spacing -- Oregon -- Pringle Falls Experimental Forest.
Notes: Caption title.

"November 1973."

Includes bibliographical references.