Production rates of skyline, balloon, and helicopter yarding systems from gross time study analysis
By: by Richard James Curtis.
Published: 1978
Language: eng
Number of pages: 72
Subjects: Logging, Aerial -- Mathematical models.; Logging, Skyline -- Mathematical models.; Balloon logging -- Mathematical models.; Logging -- Production control.
Notes: Typescript (photocopy).

"A thesis submitted to School of Forestry, Oregon State University in partial fulfillment of the requirements for the degree of Master of Forestry, 1978.

Bibliography: leaves 70-72.