Dirkis, Peter. <br/><br/>
Critical evaluation of water supply systems in Papua and New Guinea / 
by Peter Dirkis. 
 -  1968. 
 - 139 leaves :  ill., maps. 
<br/><br/>Thesis (M. Sc.) -- University of New South Wales. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply--Papua New Guinea.