000 00287nam a2200121Ia 4500
005 20240713145514.0
008 240712s9999 xx 000 0 und d
041 _aeng
100 _aKalakota, Ravi
245 _aElectronic commerce
260 _aNoida
_b Pearson Ed.
_c2014
300 _a431
999 _c24702
_d24702