26e Congres Geologique International :  Colloque C 1. ressources minérales=Mineral resources. 

 - Paris :  B.R.G.M.,  1980. 
 - 165 p. :  il. ;  27 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología económica<br/>Coloquio<br/>Recurso minero
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Actaconf
<br/><br/><label>Universal Decimal Class. No.: </label>H 061.3