00310nam a2200121Ia 4500008004100000040001700041041001200058082001600070100001800086245003800104260003500142300001100177230917s9999||||xx |||||||||||||| ||und||  e169623aMAIN  aEnglish  a004.6 K846U  aKosiur, David 0aUnderstanding electronic commerce  aNew DelhibPrentice-Hallc2004  a287 p.