000 00258nam a2200097Ia 4500
008 160710s1968 xx 000 0 und d
100 _aAMERICAN TELEPHONE
245 _aTHE BELL SYSTEMS TECHNICAL JOURNAL NO. 1. PT.I JAN
260 _bNEW YORK
942 _2ddc
_cB
999 _c31949
_d31949