000 00266nam a2200109Ia 4500
008 220201s1993 xx 000 0 eng d
100 _aDAS (PN)
245 0 _aINTRODUCTION TO AUTOMATIC TELEPHONY
250 _a9TH
260 _bMODERN BOOK AGENCY
_c1993
942 _2ddc
999 _c95727
_d95727