Wallace, W. G. <br/><br/>
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. 
<br/><br/> Cover title. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heliports.<br/>Forest surveys--Papua New Guinea.<br/>Aeronautics in forestry.<br/>Clearcutting--Papua New Guinea.