Duff, John R. <br/><br/>
Alternating current fundamentals /  [Book]. 
John R. Duff, Stephen L. Herman.  
 - 4th ed. 
 - Albany, N.Y. :   Delmar Publishers,   1991. 
 - vi, 714 p. :   ill. ;   24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0827341563 0827341571 (pbk.) 
<br/><br/><label>LCCN: </label>90036474 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric currents, Alternating.<br/>Electrical engineering.