Smith, Sydney F.
Telephony and telegraphy : an introduction to instruments and switching systems (electromechanical and reed-electronic) / by Sydney F. Smith. - 3d ed. - Oxford ; New York : Oxford University Press, 1978. - xiv, 278 p. : ill. ; 26 cm.
First ed. published in 1969 under title: Telephony & telegraphy A. Includes index.
0198593589 : 0198593570 $16.50.
78318256
GB***
Telephone.
Telegraph.
TK6161 / .S6 1978
621.3841/ / SMT
Telephony and telegraphy : an introduction to instruments and switching systems (electromechanical and reed-electronic) / by Sydney F. Smith. - 3d ed. - Oxford ; New York : Oxford University Press, 1978. - xiv, 278 p. : ill. ; 26 cm.
First ed. published in 1969 under title: Telephony & telegraphy A. Includes index.
0198593589 : 0198593570 $16.50.
78318256
GB***
Telephone.
Telegraph.
TK6161 / .S6 1978
621.3841/ / SMT