Invasion of freshly cut Douglas-fir stumps by Poria weirii
By: Earl E. Nelson.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research note PNW -- 144.
Publisher: U.S. Dept. of Agriculture, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1971
Place of publication: Portland, Or
Language: eng
Subjects: Douglas fir -- Diseases and pests -- Northwest, Pacific.; Phellinus weirii -- Northwest, Pacific.; Root rots -- Northwest, Pacific.
Notes: Caption title.

"February 1971."

Includes bibliographical reference (p. [1]).