000 00319nam a2200121Ia 45e0
008 181001s1963 xx 000 0 und d
100 _aDas P.N.
245 3 _aAn intro to automatic telephony
250 _a1963
260 _c1963
300 _a173
942 _2ddc
_cBK
999 _c301
_d301