Hughes, W. Brian. <br/><br/>
Water-quality in the Upper Colorado River Basin Colorado, 1996-98 / Norman A. Spahr 

 - Reston, VA : U.S. Geological Survey,  2000. 
 - 33p; illust. 30cm 
 - U.S. Geological Survey circular ; 1214 .
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0607954248 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water qualit --Colorado Watershed.