DONNELL, John R. <br/><br/>
Tertiary geology and oil-shale resources of the piceance creek basin between the Colorado and white rivers Northwestern Colorado / 
by John R. Donnell. 
 -- Washington :   United States Government Printing Office,   1961 
 - P. 835-891 + map. -- 
 (Geological Survey Bulletin  ;  1082-L).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado<br/>Estratigrafía<br/>Terciario
<br/><br/><label>Universal Decimal Class. No.: </label>551.78(788)