TY  - BOOK
AU  - Sinha, R. K
TI  - Mineral economics. (3rd ed.)
SN  - 8120403312
AV  - HD 9506 Sin 
PY  - 1980///
CY  - New Delhi
PB  - Oxford & IBH Publishing Co
KW  - MINERALS
KW  - MINERAL ECONOMICS
ER  -