Wallace, W. G.
Cutting pads in the forest for Bell 47-3GB 1 helicopter operation / prepared for the Helicopter Survey Team, Resources Section, Division of Management by W. G. Wallace. - [Port Moresby] : Dept. of Forests, [1966]. - 23p. : ill.
Cover title.
Heliports.
Forest surveys--Papua New Guinea.
Aeronautics in forestry.
Clearcutting--Papua New Guinea.
Cutting pads in the forest for Bell 47-3GB 1 helicopter operation / prepared for the Helicopter Survey Team, Resources Section, Division of Management by W. G. Wallace. - [Port Moresby] : Dept. of Forests, [1966]. - 23p. : ill.
Cover title.
Heliports.
Forest surveys--Papua New Guinea.
Aeronautics in forestry.
Clearcutting--Papua New Guinea.