Telephony and telegraphy / an introduction to instruments and switching systems (electromechanical and reed-electronic)
Smith, Sydney F.
Telephony and telegraphy / an introduction to instruments and switching systems (electromechanical and reed-electronic) Sydney F. Smith - 3rd ed. - New York : Oxford University Press, 1978 - xiv, 278 p. : ill. ; 23 cm.
0198593589
Telephony engineering
384.1 / SMT
Telephony and telegraphy / an introduction to instruments and switching systems (electromechanical and reed-electronic) Sydney F. Smith - 3rd ed. - New York : Oxford University Press, 1978 - xiv, 278 p. : ill. ; 23 cm.
0198593589
Telephony engineering
384.1 / SMT