HUFF, Lyman C. <br/><br/>
A geochemical Study of Alluvium-Covered Copper Deposits in Pima County, Arizona / 
By Lyman C. Huff. 
 -- Washington :   United States Government Printing Office,   1970 
 - 31 p. + 1 plan. pleg. -- 
 (Geological Survey Bulletin  ;  1312-C).
<br/><br/> Fecha real de registro 03-08-1970 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arizona<br/>Geoquímica
<br/><br/><label>Universal Decimal Class. No.: </label>550.4(791)