Ahmed, Salim. <br/><br/>
An introduction to petroleum industry  upstream sector /  [Book] : 
Salim Ahmed. 
 - Islamabad :  Petroleum digest publications,  2014. 
 - 108 p. :. 
<br/><br/> Includes index. 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>9785870921 
<br/><br/><label>Dewey Class. No.: </label>338.954