Gomes, J. M. <br/><br/>
Recovery of byproduct heavy minerals from sand and gravel operations in central and southern California / 
by J. M. Gomes, G. M. Martinez, and M. M. Wong. 
 - [Washington, D.C.] :  U.S. Bureau of Mines,  1980. 
 - 20 p. :  ill. ;  27 cm. 
 - Report of investigations ;  8471 .
 - Report of investigations (United States. Bureau of Mines) ;  8471. .
<br/><br/>Bibliography: p. 20. 
<br/><br/><label>LCCN: </label>80607916  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heavy minerals--California.<br/>Sand--California.<br/>Gravel--California.
<br/><br/><label>LC Class. No.: </label>TN23  TN24.C2  / .U43 no. 8471 
<br/><br/><label>Dewey Class. No.: </label>622 s  669