Wenger. Walter J. <br/><br/>
Characteristics of petroleum from the Powder River Basin, Wyo 
Wenger. Walter J. 
 - Washington  Bureau of mines  1961 
 - 123 p.  il  26 cm 
 - RI  5723 .
<br/><br/> "The work upon which this report is based was done under a cooperative agreement between the Bureau of Mines, U.S. Department of the Interior, and the University of Wyoming." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>petróleo
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Wyoming
<br/><br/><label>Universal Decimal Class. No.: </label>66