Lawrence, Ralph Restieaux,  1873- <br/><br/>
Principles of alternating-current machinery / 
Ralph Restieaux Law rence Rev. by Henry E. Richards. 
 - 4th ed. 
 - New York:  McGraw-Hill,  1953. 
 - 623 p. :  ill.;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric machinery--Alternating current.
<br/><br/><label>Dewey Class. No.: </label>621.3133