000 00306nam a2200109Ic 4500
008 240520s9999 xx 000 0 und d
020 _a131973681
100 1 _aHausley, Trevor
245 1 0 _aData comm. and teleprocessing systems /
_cTrevor Hausley
264 1 _aNew jersey
_bPrentice Hall
_c1979
942 _cBK
999 _c12436
_d12436