Gumhalter, Hans. <br/><br/>
Power suplly systems in communications engineering :   Part 1: Principles 

 - Berlin :   Siemens,   1984. 
 - 230 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TELECOMUNICACIONES<br/>FUENTES DE ALIMENTACION
<br/><br/><label>Universal Decimal Class. No.: </label>621.316:621.39