Karl-Heinz Kleinau; Somasundaran, K, Tr. <br/><br/>
Telephone pratishtapanam (m) 

 -  State Institute of Languages, TVPM  1973 
 - 217 
 - Sankethika Patangal .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wire telephony; Electronics and communication engineering; Applied physics
<br/><br/><label>Dewey Class. No.: </label>S 621.385  KAR-T