Spiral grain
Subtitle: a cause of pole twisting
By: by Charles A. Wellner and David P. Lowery.
Contributors: Lowery, David P.
Series: U.S. Forest Service research paper INT -- 38.
Publisher: Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1967
Place of publication: Ogden, Utah
Language: eng
Number of pages: 17
Subjects: Spiral grain.; Wood poles.
Notes: Bibliography: p. 16-17.