Gabler, Robert C. <br/><br/>
Processing chalcopyrite concentrates by a nitrogen roast-hydrometallurgical technique 
Gabler, Robert C.; Campbell, W. J.; Brown, R. E.; Dunning, B. W. 
 - Washington  Bureau of mines  1975 
 - 18 p. 
 - RI 8067 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>MINING
<br/><br/><label>Subjects--Index Terms: </label>CALCOPIRITA CHALCOPYRITE 
<br/><br/><label>Universal Decimal Class. No.: </label>622