Telephony and telegraphy : an introduction to instruments and switching systems (Electromechanical and reed-electronic) /

Telephony and telegraphy : an introduction to instruments and switching systems (Electromechanical and reed-electronic) /

16

Detalles Bibliográficos
Autor Principal:	400952 Smith, Sydney F.
Formato:
Publicado:	Oxford : Oxford University Pr., 1978
Subjects:	Telephone Telegraph