Trask, Parker D.  1899-1961 <br/><br/>
Geologic description of the managanese deposits of California, 
by Parker D. Trask [and others] Presenting results of a cooperative undertaking between the United States Geological Survey and the California State Division of Mines. 
 - San Francisco,  1950. 
 - 378 p.  illus., maps (part col.)  24 cm. 
 - California.  Dept. of Natural Resources.  Division of Mines.  Bulletin,  152 .
 - Bulletin (California. Division of Mines) ;  no. 152. .
<br/><br/> Part of illustrative matter in pocket.  "Supplements Bulletin 125 [prepared under the direction of Olaf P. Jenkins]" 
<br/><br/><label>LCCN: </label>gs 50000105  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manganese ores--California.
<br/><br/><label>LC Class. No.: </label>TN24.C2  / A3 no. 152 
<br/><br/><label>Dewey Class. No.: </label>553.46