Small yarder comparison
By: James T. Seabaugh, Vern P. Yerkes.
Contributors: Yerkes, Vern P.; United States. Forest Service. Pacific Northwest Region.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region
Published: 1979
Place of publication: Portland, Or
Language: eng
Number of pages: 49
Subjects: Logging -- Machinery.; Logging, Skyline.
Notes: "April 1979."