Single-span running skylines
By: by Hilton H. Lysons and Charles N. Mann.
Contributors: Mann, Charles N.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: U.S. Forest Service research note PNW -- 52.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Published: 1967
Place of publication: Portland, Or
Language: eng
Subjects: Logging, Skyline.
Notes: Caption title.

"April, 1967."

Includes bibliographical references.