000 00333nam a2200133Ia 4500
008 220201s1975 xx 000 0 eng d
041 _aENG
100 _aDASS, P N
245 0 _aINTRODUCTION TO AUTOMATIC TELEPHONY
250 _a4TH
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1975
300 _a237
942 _2ddc
999 _c46477
_d46477