Sharp, William N.  1922- <br/><br/>
Lead, copper, molybdenum, and zinc geochemical anomalies south of the Summitville District,  Rio Grande County, Colorado, 
by William N. Sharp and James L. Gualtieri. 
 - Washington,  1968. 
 - iii, 7 p.  maps.  27 cm. 
 - Geological survey circular 557 .
 - Geological Survey circular ;  557. .
<br/><br/>Bibliography: p. 2. 
<br/><br/><label>LCCN: </label>gs 68000268  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lead ores--Colorado--Rio Grande County.<br/>Mines and mineral resources--Colorado--Rio Grande County.
<br/><br/><label>LC Class. No.: </label>QE75  / .C5 vol. 557 
<br/><br/><label>Dewey Class. No.: </label>553/.4