World petroleum congress 10th 1979 Bucharest <br/><br/>
Proceedings of the tenth world petroleum congress 

 - London  Heyden  1980 
 - 6v. ill. 29cm 
<br/><br/><label>ISBN: </label>0855014709 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum--Congresses