Stephens, J. H.  1925- <br/><br/>
The age of power / 
J. H. Stephens 
 - London :  P. Davies,  1974 
 - 168 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> PND 03.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Power (Mechanics)
<br/><br/><label>Dewey Class. No.: </label>333.7