Pariona Rojas, Angel Américo <br/><br/>
Technical English course for professionals and students of geological engineering 

 - Lima  Instituto Científico y Tecnológico Minero  1977 
 - 197 p.  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOLOGIA<br/>INGLES TECNICO
<br/><br/><label>Universal Decimal Class. No.: </label>P/802.0-086.6:55/P26