000 00357nam a2200133Ia 4500
008 130705s9999 xx 000 0 und d
020 _a0877091420
050 0 _aHF 5548.2 S44895 1994
100 1 _aSilver, Gerald A
245 1 0 _aData communications for business /
_cGerald A Silver
250 _a3rd ed
300 _ap.
942 _2lcc
_kHF 5548.2 S44895 1994
999 _c4814
_d4814