Duffy, Joseph W. <br/><br/>
Power, prime mover of technology / 
Joseph W. Duffy. 
 - Bloomington, Ill. :  McKnight & McKnight,  c1964. 
 - xiv, 369 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical engineering.<br/>Power (Mechanics).