- Telecommunication--Periodicals (23)
- Electronics--Periodicals (7)
- Computer science--Periodicals (3)
- Telephone--Periodicals (3)
- Electric engineering--Periodicals (2)
- Electro-acoustics--Periodicals (2)
- Sound--Recording and reproducing--Periodicals (2)
- Alcatel N.V.--Periodicals (1)
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- Telecommunication systems--Periodicals (1)
- Television--Periodicals (1)