Production rates and costs for yarding by cable, baloon and helicopter compared for clearcuttings and partial cuttings. Corvallis: 1976 44 p. : ill.
Production rates and costs for yarding by cable, baloon and helicopter compared for clearcuttings and partial cuttings. Corvallis: 1976 44 p. : ill.
(1976) Production rates and costs for yarding by cable, baloon and helicopter compared for clearcuttings and partial cuttings, Corvallis: 44 p. : ill.
(1976). Production rates and costs for yarding by cable, baloon and helicopter compared for clearcuttings and partial cuttings. Corvallis: 44 p. : ill.
Production rates and costs for yarding by cable, baloon and helicopter compared for clearcuttings and partial cuttings. Corvallis: 1976. p. 44 p. : ill.
