00346nam a2200145Ia 4500100004100000650002000041250000600061366000700067654002000074245003900094260002300133082001300156300000800169546002300177  aWhitten/Jeffrey L/ Bentley/Lonnie D   asystem analysis  a7  f25  asystem analysis  aSystem Analysis and design methods  bMc Graw Hillc1986  a4.2bWHI  a747  aENGLISHcComputers