Papua New Guinea Department of Mineral Resources, Geological Survey report / 
PNG Dept. of Mineral Resources, Geological Survey. 
 - Port Moresby :  PNG Geological Survey,  1998- 
 - v. :  ill., maps. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigation--Research--Markham Valley (Papua New Guinea).<br/>Water--Research.--Markham Valley (Papua New Guinea)<br/>Groundwater--Quality.--Markham Valley (Papua New Guinea)<br/>Water quality--Markham Valley (Papua New Guinea).
<br/><br/><label>Dewey Class. No.: </label>559.53