LANDIS, E. R. <br/><br/>
Coal resources of Colorado / 
by E. R. Landis. 
 -- Washington :   United States Government Printing Office,   1959 
 - P. 131-232 + map. -- 
 (Geological Survey Bulletin  ;  1072-C).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Carbon<br/>Colorado
<br/><br/><label>Universal Decimal Class. No.: </label>552.574(788)