Geothermal energy :  review of research and development / 
edited by H. Christopher H. Armstead. 
 - Paris :  Unesco,  1973. 
 - 186 p. 
 - Earth sciences ; 12 .
<br/><br/><label>ISBN: </label>9231010638 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geothermal resources--Research.<br/>Natural resources--Research.