000 00281nam a2200109Ia 4500
008 230411s9999 xx 000 0 und d
082 _a621.385
_bCAR
100 _a CARDEN (CARLTON)
245 0 _aUnderstanding Computer Telephony
260 _b Flaritan Pub.
_a NEW YORK
942 _cBK
999 _c2492
_d2492