Northrop, John D. <br/><br/>
Petroleum in 1917 

 - Washington, D.C.  Government Printing Office  1919 
 - pp. 683-901 
 - Mineral Resources of the United States, 1917-Part II. .
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>PETROLEO
<br/><br/><label>Dewey Class. No.: </label>343.077