cento symposium on mining geology and the base metals, held in Ankara, Turkey, 14-29 September 1964 / 

 - Ankara :  Central Treaty Organization,  1964. 
 - 325 p. :  il. , maps. ;  30 cm. 
<br/><br/>Incluye referencias bibliográficas. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOLOG� A<br/>METALES BÁSICOS<br/>CONGRESO
<br/><br/><label>Dewey Class. No.: </label>061.3:553.1 Sy68