Clark, Melanie L. <br/><br/>
Environmental characteristics and water quality of hydrologic benchmark network stations in the west-central United States, 1963-95 
byMelanie L. Clark , Cheryl A. Eddy-Miller and M. Alisa Mast. 
 - Reston, Va.  Denver, CO  U.S. Dept. of the Interior, U.S. Geological Survey  Free on application to the USGS Information Services  2000. 
 - x, 115 p.  ill., maps  28 cm. 
 - USGS circular  1173-c. .
<br/><br/>Includes bibliographical references(p.100-103). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology--History.--West (U.S.)<br/>Water quality--History.--West (U.S.)