Effects of high soil density on seedling root growth of seven Northwestern tree species
By: by Done Minore, Clark E. Smith, and Robert F. Woollard.
Contributors: Woollard, Robert F.; Smith, Clark E.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research note PNW -- 112.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1969
Place of publication: [Portland, Or.]
Language: eng
Subjects: Seedlings -- Washington (State) -- Growth.; Trees -- Washington (State) -- Growth.; Conifers -- Washington (State); Soils -- Density.; Roots (Botany) -- Growth.
Notes: Cover title.

"October 1969."

Includes bibliographical references.