00273nam a2200109Ia 4500100001500000250002100015942000700036245004700043260003900090082001500129999001900144  aJames Senn  a2nd Edition 1989  cBK  aAnalysis and Design of Information Systems  aMC Grawhill Book Int. Pub. Newyork  a658.4bJAM  c424356d424356