Timbie, William H. <br/><br/>
Essentials of alternating currents   
by William H. Timbie and Henry H. Higbie. 
 - 2nd ed. 
 - New York  John Wiley  1939 
 - x, 377p. 
<br/><br/><label>Dewey Class. No.: </label>621.31913  / N39;2