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. 
 - Report of investigations ;  8471 .
 - Report of investigations (United States. Bureau of Mines) ;  8471. .
<br/><br/><label>LCCN: </label>91026165      
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heavy minerals--By-products--California.<br/>Sand--California.<br/>Gravel--California.