00278nam a2200097Ia 4500008004100000040002500041082001200066100004200078245005100120260000900171230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a004 Sh4  aShelly, Gary B. and Thomas J. Cashman 0aIntroduction to computers and data processing   c1980