HOUGHTON, ROBERT L. <br/><br/>
HYDROGEOCHEMISTRY OF THE UPPER PART OF THE FORT UNION GEOUP IN THE GASCOYNE LIGNITE STRIP... 

 - WASHINGTON: USDI.,  1987 
 - 104P;ILLUST 
 - U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1340 .
<br/><br/><br/>ENG 
<br/><br/><label>Subjects--Topical Terms: </label><br/>WATER QUALITY.<br/>STRIP MINING.<br/>WATER, UNDERGROUND.