Wills, B A  Barley, R W, Ed. <br/><br/>
Mineral processing at a crossroads: Problems and prospects 

 - Dordrecht  Martinus Nijhoff  1986 
 - NATO ASI series, Advanced science institutes series, series E: Applied sciences.117 .
<br/><br/><label>Dewey Class. No.: </label>622.7  / WIL