000 00292nam a2200121Ia 4500
008 220201s2020 xx 000 0 eng d
082 _a658.84 KAL
100 _aKalakota, Ravi
245 0 _aFrontiers of electronic commerce
260 _aNoida
_bPearson
_c2013
300 _a864
942 _2ddc
999 _c29975
_d29975