Economics of mineral engineering an inter-regional seminar organised by the United Nations in co-operation with the Government of Turkey, Ankara, April 1976
Interregional Seminar on Economics of Mineral Engineering1976Ankara.
United Nations.
Turkey.
London Mining Journal Books Limited [for] the United Nations
1976
'... the Interregional Seminar on Economics of Mineral Engineering held at Ankara, Turkey, from 5 to 15 April 1976 ...' p.220
Includes bibliographies
Underdeveloped areas