Water quality in the Upper Colorado River Basin, 1996-98 / 
by Norman E. Spahr ... [et al.]. 
 - Reston, VA :  U.S. Geological Survey,  2000. 
 - iv, 33 p. :  col. ill., col. maps ;  28 cm. 
 - U.S. Geological Survey circular ;  1214 .
<br/><br/>Includes bibliographical references (p. 25-27). 
<br/><br/><label>ISBN: </label>0607954248 (pbk. : alk. paper)  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality--Colorado River Watershed (Colo.-Mexico)