PETRAD  20 years 1989-2009 of petroleum knowledge for world 

 - [ s.l ]  PETRAD  [2009] 
 - 147 p.  col. photos  28 cm x 31 cm 
<br/><br/> Cover title 
<br/><br/><label>Subjects--Corporate Names: </label><br/>PETRAD
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum industry