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. 
<br/><br/><label>ISBN: </label>0900117109 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mining engineering.<br/>Mineral industries--Economic aspects.