00294nam a2200121Ia 4500008004100000041001200041082001900053100001800072245004700090250001300137260001400150300000800164231217s9999    xx            000 0 und d  aEnglish  a003  SEN;2 `R'  aSenn, James A 0aAnalysis and design of information systems  a2nd ed.   c1989bM C  a552