analysis of forces and conditions which influence the successful passage of a carriage over an intermediate support jack during downhill multi-span logging
By: Thomas J. Bobbe.
Published: 1983
Language: eng
Number of pages: 63
Subjects: Logging, Skyline.
Notes: Typescript (photocopy).

"A paper submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master of Forestry, 1983."

Bibliography: leaf 54.