DONNELL, John R. <br/><br/>
Paleocene and Lower Eocene Units in the Southern Part of thhe Piceance Creek Basin Colorado / 
By John R. Donnell. 
 -- Washington :   United States Government Printing Office,   1969 
 - 18 p. -- 
 (Geological Survey Bulletin  ;  1274-M).
<br/><br/> Fecha real de registro 04-08-1969 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado<br/>Eoceno<br/>Estratigrafía<br/>Paleoceno
<br/><br/><label>Universal Decimal Class. No.: </label>551.781.3(788)