00352nam a22001337a 450000500170000002000260001703500130004308200110005610000180006724500670008525000110015226000360016330000190019920181218120439.0  a8188153009cRs 110.00  aB-108390  a005.43  aGupta, Rajeev  aComputer fundamentals and operating systems /cby Rajeev Gupta  arev ed  aDelhibNipun Publicationsc2005  a239pc24x18 cm