New sources of energy 
/ Proceedings of the United Nations conference on new sources of energy.................................21-31 August, 1961 
 - New Delhi:   United Nations,   1964 
 - v, 516p. 
<br/><br/> Vol. 3 Geothermal energy: II 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Proceedings
<br/><br/><label>Universal Decimal Class. No.: </label>620.9(100)  / K4.3