Proceedings of the minth Commonwealth mining and metallurgical congress 1969. 

 - London :  The institution of mining and metallurgy,  1970. 
<br/><br/> La Biblioteca posee solo V.2. 
<br/><br/>V.2:Petroleum geology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minería
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>622