Duffield, Wendell A. <br/><br/>
Geothermal energy  clean power from the Earth's heat 
by Wendell A. Duffield and John H. Sass. 
 - Menlo Park, Calif.  Denver, CO  U.S. Geological Survey  Available from U.S. Geological Survey Information Services [distributor]  2003. 
 - vi, 36 p.  col. ill., col. maps  28 cm. 
 - Circular  1249 .
 - U.S. Geological Survey circular  1249. .
<br/><br/> Shipping list no.: 2004-0008-P. 
<br/><br/>Includes bibliographical references (p. 36). 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geothermal resources
<br/><br/><label>GPO Item No.: </label>0620-A 0620-A (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.4/2:1249