Elder, John <br/><br/>
Geothermal systems 
Elder, John 
 - London  Academic Press  1981 
 - ix,508 pages 
<br/><br/><br/>In English 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Goethermal engineering
<br/><br/><label>Dewey Class. No.: </label>621.44 E44G 1981