Proceeding on world petroleum congress 

 -  1980 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>42270 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum
<br/><br/><label>Dewey Class. No.: </label>F555p1,N79, M0.3-..6