Sheppard, Richard A. <br/><br/>
Diagenesis of tuffs in the Barstow formation, mud hills, San Bernardino county, California / 
by Richard A. Sheppard and Arthur J. Gude. 
 -- Washington :   United States Government Printing Office,   1969 
 - 34 p. -- 
 (Geological Survey Professional Paper  ; 634).
<br/><br/><label>Universal Decimal Class. No.: </label>1. Geoquímica 2. California