Seventh world petroleum congress  / Elsevier Publishing  Co Ltd 

 - England:   Elsevier Publishing  Co Ltd,   1967 
 - 110p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oils 
<br/><br/><label>Subjects--Index Terms: </label>Building  Public relations  
<br/><br/><label>Universal Decimal Class. No.: </label>665.5(05)  / K7