Can thinning slash cause a nitrogen deficiency in pumice soils of central Oregon?
By: by P.H. Cochran.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: U.S. Forest Service research note PNW -- 82.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Forest Service
Published: 1968
Place of publication: [Portland, Or.]
Language: eng
Number of pages: 11
Subjects: Volcanic ash, tuff, etc. -- Nitrogen content -- Oregon.; Soils -- Nitrogen content -- Oregon.; Slash (Logging) -- Oregon.
Notes: Caption title.

"July, 1968."

Includes bibliographical references (p. 11).