Improved adapter for increment borer ratchet assembly
By: by Francis R. Herman.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research note PNW -- 192.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1972
Place of publication: Portland, Or
Language: eng
Subjects: Dendrochronology.; Forests and forestry -- Measurement.
Notes: Caption title.

"November 1972."

Includes bibliographical references (p. [1]).