TY  - BOOK
AU  - Julian, Henry Forbes,
AU  - Smar, Edgar
TI  - Cyaniding gold and silver ores: a practical treatise on the cyanide process... 
AV  - TN767 J8 1907
PY  - 1907///
CY  - London
PB  - G. griffin
KW  - Endurecimiento superficial
N1  - Technical and commercial investigations, the chemistry in theory and practice, methods of working and the costs, design and construction of the plant and the costs"
ER  -