000 00265nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _bMAD
100 _aMadan, Sushila
245 0 _aE-Commerce
260 _bScholar tech Press
_c2018
300 _a160
942 _cBD
999 _c6779
_d6779