PECK, Dallas L. <br/><br/>
Geologic reconnaissance of the Antelope-Ashwood area North-Central Oregon : with emphasis on the John day formation of late oligocene and early miocene age / 
by Dallas L. Peck. 
 -- Washington :   United States Government Printing Office,   1964 
 - 26 p. + map. -- 
 (Geological Survey Bulletin  ;  1161-D).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estratigrafía<br/>Mioceno<br/>Oligoceno<br/>Oregon
<br/><br/><label>Universal Decimal Class. No.: </label>551.781.5+551.782.1(795)