The mound builders :  agricultural practices, environment, and society in the Central Highlands of New Guinea / 
Eric Waddell. 
 - Seattle :  University of Washington Press,  1972. 
 - xvi, 253 p. :  ill. ;  23 cm. 
 - American Ethnological Society.  Monograph ;  53. .
<br/><br/>Includes bibliographical references (p. 239-249) and index. 
<br/><br/><label>ISBN: </label>0295951699 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture, Primitive.<br/>Anthropogeography--New Guinea.<br/>Enga (New Guinea people).