Ente nazionale idrocarburi <br/><br/>
Energy and Petroleum in 1971 
Ente nazionale idrocarburi 
 - n.p., 1971 
 - 160p  ill.   27 cm.  
<br/><br/>Includes index  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy Economics
<br/><br/><label>Dewey Class. No.: </label>333.7  / ENT