Lawrence, Ralph R. <br/><br/>
Principles of alternating-current machinery 

 - 3rd ed 
 - New York, London :   McGraw-Hill,   1940. 
 - 678 p. : il. ; 23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MAQUINAS ELECTRICAS<br/>MOTORES ELECTRICOS<br/>TRANSFORMADORES
<br/><br/><label>Universal Decimal Class. No.: </label>621.313