TY  - BOOK
AU  - Kustel, G.,
TI  - Roasting of gold on silver ores, and the extraction of their respective metals: Without quickstel 
AV  - TN765 K87
PY  - 1880///
CY  - San francisco
PB  - A. J. Leary, stationer and printer
KW  - Cloración
ER  -