000 00595nam a2200193 i 4500
001 44693
003 BD-DhUET
008 781114s1978 enka 001 0 eng
020 _a0198593570
040 _aDLC
_cDLC
_dBD-DhUET
082 _a623.85
_bSMI/1978
100 1 _aSmith, Sydney F.
245 1 0 _aTelephony and telegraphy
_ban introduction to instruments and switching systems (electromechanical and reed-electronic)
250 _a3rd ed.
260 _aNew York
_bOxford University Press
_c1978
300 _axiv,278p.
_bill.
_c26 cm.
650 0 _aTelephony engineering
942 _cRNTL
999 _c44693
_d44693