00347nam a2200121Ia 4500008004100000082001500041100001900056245003900075250000900114260003300123300000600156650006300162150614s9999    xx            000 0 und d  a004  STA-P  aRalph M. Stair  aPrinciples of Information Sysytems  aI ED  bBoyd & Fraser Pub. Co.c1992  a0  aPrinciples of Information Sysytems Ralph M. Stair,Computer