Growth of Douglas-fir, ponderosa pine, and western larch seedlings following seed treatment with 30 percent hydrogen peroxide
By: by James W. Edgren and James M. Trappe.
Contributors: Trappe, James M.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note -- PNW-130.; USDA Forest Service research note PNW -- 130.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service
Published: 1970
Place of publication: [Portland, Or.]
Language: eng
Subjects: Douglas fir -- Seeds; Ponderosa pine -- Seeds; Western larch -- Seeds; Seed treatment
Notes: Caption title.

"September 1970."

Includes bibliographical references (p. 4,6)