00299nam a2200121Ia 450000500170000000800410001704100080005808200160006610000150008224500230009726000480012030000090016820260720174554.0260720s2004    xx            000 0 und d  aeng  a001.52 SINC  aSingh, U K  aComputer education  aNew DelhibDiscovery Publishing Housec2004  a329p