Ayres, Eugene. <br/><br/>
Energy sources,  the wealth of the world 

 - 1st ed. 
 - New York,  McGraw-Hill,  1952. 
 - 344 p.  illus.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Power resources.
<br/><br/><label>Dewey Class. No.: </label>621 HIL 1952 A106 Or.