TY  - BOOK
AU  - RAY, H S
AU  - GHOSH, A
TI  - Principles of Extractive Metallurgy
SN  - 8122403220
PY  - 1984///
CY  - Oxford
PB  - One World
KW  - Metallurgy and Material Engineering 
KW  - Principles of Extractive Metallurgy
ER  -