TY  - BOOK
AU  - Sinha,Rohini Kant
AU  - Sharma,N.L.
TI  - Mineral economics
U1  - 660 
PY  - 1970///] c1988
CY  - New Delhi
PB  - Oxford & IBH Pub. Co.
KW  - Mines and mineral resources
KW  - Mineral industries
ER  -