Armstead, H. Christopher H. <br/><br/>
Geothermal energy :  its past, present, and future contributions to the energy needs of man / 
H. Christopher H. Armstead 
 - 2nd ed. 
 - London :  E & FN Spon,  1983 
 - 404 p. :  ill. ;  24 cm. 
<br/><br/>Includes index Bibliography : p.377-404 
<br/><br/><label>LCCN: </label>83-337 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geothermal engineering<br/>Geothermal resources