Instrumentation for communications :   translation of the 12th German ed. of Oct. 1968. / 
Siemens Aktiengesellschaft 
 - [München] :   Siemens Aktiengesellschaft,   1969. 
 - 436 p. :  ill. ;  29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Télécommunications --manuels--Guides
<br/><br/><label>Dewey Class. No.: </label>621.382  / INS 1969