Eckel, Edwin Butt,  1906- <br/><br/>
Geology and ore deposits of the La Plata district, Colorado, 
by Edwin B. Eckel with sections by J. S. Williams, F. W. Galbraith and others. Prepared in cooperaton with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund. 
 - Washington,  U.S. Govt. Print. Off.,  1949. 
 - vii, 179 p.  illus., maps.  29 cm. 
<br/><br/> Part of illustrative matter folded in pocket. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>gs 50000051  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Colorado--La Plata district.<br/>Ore deposits--Colorado--La Plata district.
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 219 
<br/><br/><label>Dewey Class. No.: </label>557.88