Economics of mineral engineering : an inter-regional seminar /
organised by the United Nations in co-operation with the government of Turkey, Ankara, April 1976.
- London : Mining Journal Books in co-operation with the United Nations, 1976.
- 223 p. : ill.
0900117109
Mining engineering.
Mineral industries--Economic aspects.
0900117109
Mining engineering.
Mineral industries--Economic aspects.