ID:DA16335609
Seminar on Economics of Mineral Engineering, Interregional
Séminaire interrégional sur l'aspect économique des techniques minières, Ankara, 1976
Interregional Seminar on Economics of Mineral Engineering, Ankara, 1976
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organised by the United Nations in co-operation with the government of Turkey, Ankara, April 1976
Mining Journal Books 1976
Available at 2 libraries