Logging plan and cost analysis comparison
Subtitle: hi-lead and Skagit radio-controlled skyline crane
By: by William B. Ayars.
Published: 1961
Language: eng
Number of pages: 31
Subjects: Logging, Skyline -- Oregon -- Costs -- Case studies.
Notes: Typescript (photocopy).

"A paper submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master of Forestry, 1961."

Three maps folded in back pocket.