000 00286nam a2200109Ia 4500
008 230915s9999 xx 000 0 und d
100 _aKalakota,Ravi And Whinston, Andrew B.
245 0 _aFrontiers of Electronic Commerce Ed.17th
260 _bPearson
260 _c2022
300 _a864
999 _c161722
_d161722