Grace, Robert. <br/><br/>
Oil :  an overview of the petroleum industry / 
Robert Grace 
 - 6th ed. 
 - Houston :  Gulf Publishing Company ,  c2007 
 - ix, 161 p.  :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>1933762012 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum industry and trade<br/>Petroleum industry and trade--United States<br/>Energy industries<br/>Energy industries--United States