World energy supplies 1969<-72. 

 - New York  United Nations          1974 
 - xiv; 195p.  cm. 
 - Statistical papers series no.17 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9 (F55).1N45.N72 - N69s, L2/UN