Levorsen, A. I. <br/><br/>
Possible future oil provinces of the United States and Canada. 

 - Tulsa :  The Am.Ass.of Petroleum Geologists,  1941. 
 - 154 p. :  il. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología económica<br/>Petróleo
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Canadá<br/>Estados Unidos
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>553.982(73)