Mineral economics
Sinha, R. K.
Mineral economics K. R. Sinha - 4th edition - New Delhi : Oxford and IBH Publishing Co. Pvt. Ltd., 1993. - xvi, 394p.; 22 cm.
Future sources of mineral supply
Fesibility study
National mineral policy
Mineral economics
338.2
Mineral economics K. R. Sinha - 4th edition - New Delhi : Oxford and IBH Publishing Co. Pvt. Ltd., 1993. - xvi, 394p.; 22 cm.
Future sources of mineral supply
Fesibility study
National mineral policy
Mineral economics
338.2