Hass, Larry A. <br/><br/>
Influence of chelating reagents on leaving of copper ore / 
by Larry A. Hass and Terry L. Hebble 
 - U.S.A :  United States Government Printing Office,  1985 
 - 12 p. ;  26 cm. 
<br/><br/> Report of investigations 8965 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copper industry and trade--United States--Statistics<br/>Industrial statistics--United States
<br/><br/><label>Dewey Class. No.: </label>338.4767330973021