Langsdorf, Alexander S. <br/><br/>
Principles of direct-current machines 
Alexander S. Langsdorf                                       
 - 6th ed. 
 - New York  McGraw-Hill  1959 
 - xvii, 363p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering<br/>NASA Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>621.3.04  / LAN