Sheppard, Richard A. <br/><br/>
Big Sandy Formation Near Wikieup, Mohave County, Arizona / 
By Richard A. Sheppard and Arthur J. Gude. 
 -- Washington :   United States Government Printing Office,   1972 
 - 10 p. -- 
 (Geological Survey Bulletin  ;  1354-C).
<br/><br/> Fecha real de regsitro 29-05-1972 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arizona<br/>Estratigrafía
<br/><br/><label>Universal Decimal Class. No.: </label>551.7(791)