TY  - BOOK
AU  - Gabler,Robert C
ED  - United States Department of the Interior.
TI  - Processing chalcopyrite concentrates by a nitrogen roast-hydrometallurgical technique
T2  - Report of investigations / Bureau of Mines, U.S. Department of the Interior
PY  - 1975///
CY  - Washington, D.C.]
PB  - U.S. Dept. of the Interior
KW  - Chalcopyrite
N1  - Tables
ER  -