Armstead, H. Christopher. <br/><br/>
Geothermal energy :  its past, present and future contributions to the energy needs of man / 
H. Christopher Armstead. 
 - 2nd ed. 
 - London :  E. & F. N. Spon,  1983 
 - xxxviii, 404 p.  : ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0419122206 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Historical note
<br/><br/><label>Dewey Class. No.: </label>338.88   / CHG