000 00284nam a2200097Ic 4500
008 240520s9999 xx 000 0 und d
100 1 _aMerill, Charles
245 1 0 _aIntroduction to business telecommunications /
_cCharles Merill
264 1 _bOhio : Charles E. Merill
_c1984
942 _cBK
999 _c19284
_d19284