BUSH, A. L. <br/><br/>
Areal geology of the placerville quadrangle San Miguel county Colorado / 
by A. L. Bush, C. S. Bromfield and C. T. Pierson. 
 -- Washington :   United States Government Printing Office,   1959 
 - P. 299-384. -- 
 (Geological Survey Bulletin  ;  1072-E).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado<br/>Geología
<br/><br/><label>Universal Decimal Class. No.: </label>55(788)