Designing double-tree intermediate supports for multispan skyline logging
By: [prepared by John W. Mann].
Contributors: Oregon State University. Extension Service.
Series: Extension circular / Oregon State University Extension Service -- 1165.; Extension circular (Oregon State University. Extension Service) -- 1165.
Publisher: Extension Service, Oregon State University
Published: 1984
Place of publication: Corvallis, Or
Language: eng
Subjects: Logging, Skyline.
Notes: Title from caption.

"February 1984."

Bibliography: p. 8.