00333nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001400084245005200098260002500150300000800175650001600183221030s9999    xx            000 0 und d  a8120317769  aEnglish  a105.23bKos  aD. Koisur 0aUnderstanding Electronic Commercecby D. Koisur  bPHIaNew Delhic2004  a287  aBE Computer