Trautmann, Kurt <br/><br/>
Design of Automatic Telephone Exchanges  

 - Munich :   Siemens and Halske Aktiengesellschaft,   c1962 
 - 221 p. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephony
<br/><br/><label>Dewey Class. No.: </label>384.6  / TRA