00442nam a2200169Ia 4500003000400000005001700004008004000021020001800061040000700079041001200086082001900098100004400117245003700161260004600198300001200244650001600256OSt20221008094427.0210210b2002   xxu||||| |||| 00| 0 eng d  a81 7808 057 5  cAL  aEnglish  a001.64404 KALF  aKALAKOTA (Ravi) and WHINSTON (Andrew B)  aFrontiers of electronic commerce  aDelhi.bPearson Education Pvt Ltd.,c2002  axiv,850  aE Commerce