Milson, J. <br/><br/>
Madang Province helicopter gravity survey 
by J. Milson 
 - [Port Moresby]  Office of Minerals and Energy  [1975] 
 - [2], 18 leaves, 7 leaves of plates  maps (some folded)  30cm 
 - Report  75/15 .
<br/><br/> On cover: Dept. of Lands, Surveys and Mines 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Barometric hypsometry<br/>Gravity--Measurement--Papua New Guinea--Madang Province<br/>Gravity anomalies--Papua New Guinea--Madang Province<br/>Leveling--Papua New Guinea--Madang Province