000 00283nam a2200109Ia 45e0
008 181001s1951 xx 000 0 und d
100 _aCreamer W.J.
245 0 _aCommunication Network and Lines
260 _aN.Y.
_bHopper N.Y
_c1951
300 _a353
942 _2ddc
_cBK
999 _c1367
_d1367