Petroleum fact and figures. 

 - Baltimore :  Am.Petroleum Institute,  1931. 
 - 268 p. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Substancias útiles<br/>Petróleo
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>665.6