TY  - BOOK
AU  - Congress of world mining congress (12th : 1984 : New Delhi)
TI  - Optimal exploitation of solid mineral resources : : World Mining Congress, New Delhi, India, November 19-23, 1984
U1  - 622 WOR-3 
PY  - 1984///.
CY  - Calcutta : 
PB  - World Mining Congress, 
KW  - Mineral resources conservation
KW  - Mine safety
KW  - Mines and mineral resources
KW  - Mining engineering
ER  -