Hughes, Ian <br/><br/>
Recent neolithic trade in New Guinea :  the ecological basis of traffic in goods among stone-age subsistence farmers / 
Ian Hughes 
 -  1971 
 - xiii, 405 leaves :  ill., maps 
<br/><br/>Thesis (Ph.D.)--Australian National University 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic anthropology--Papua New Guinea
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Papua New Guinea--Commerce--History