U.S. crude oil, natural gas and natural gas liquids reserves, 1977-1989 [computer file]. 

 - Washington  Dept. of Energy  1991. 
 - 1 diskette  5 1/4 in. 
<br/><br/><label>LCCN: </label>doc92000583  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum--Reserves--Databases.--United States<br/>Gas Natural--Reserves--Databases.--United States