000 00262nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aDAVIDSON((JONATHAN)
245 0 _aVOICE OVER I P FUNDAMENTALS
260 _c2001
_bND TECHMEDIA
300 _a372
942 _cBK
999 _c17203
_d17203