Gumhalter, Hans. <br/><br/>
Power supply systems in communications engineering / 
by Hans Gumhalter. 
 - 2nd ed. 
 - Berlin :  Siemens Aktiengesellschaft ,  c1986- 
 - v. <1   > :  ill. ;  22 cm. 
<br/><br/> Translation of: Stromversorgungssysteme der Kommunikationstechnik. 
<br/><br/>pt. 1. Principles. 
<br/><br/><label>ISBN: </label>0471913499  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems--Power supply.
<br/><br/><label>LC Class. No.: </label>TK5102.5  / .G8513 1986