Freezing decayed wood to faciliate ring counts and width measurements
By: by Francis R. Herman, Clark E. Smith and John E. Firth.
Contributors: Smith, Clark E.; Firth, John E.
Series: USDA Forest Service research note PNW -- 187.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1972
Place of publication: Portland, Or
Language: eng
Subjects: Tree-rings -- Cascade Range.; Forests and forestry -- Measurement.; Wood -- Deterioration.
Notes: Caption title.

"September 1972."

Includes bibliographical references (p. 2).