000 00255nam a2200097Ia 4500
008 230915s9999 xx 000 0 und d
050 _aPN4129.15.V47 2008
100 _aRUDOLPH F.VERDERBER
245 4 _aTHE CHALLENGE OF EFFECTIVE SPEAKING
942 _cBK
999 _c177455
_d177455