TY  - BOOK
AU  - Sinha,R.K.
AU  - Sharma,N.L.
TI  - Mineral economics
PY  - 1976///
CY  - New Delhi
PB  - Oxford and IBH Pub. Co.
KW  - Mines and mineral resources
KW  - Mineral industries
KW  - Study and teaching
N1  - p. 351-357
ER  -