00415nam a22001337a 450000500170000002000230001703500230004003700130006310000200007624500970009626000440019330000240023770000200026120180827153010.0  a8120321847c450.00  aB-126350, B-126354  aDPLbENG  aRay, Ajay Kumar  aInformation technology :bPrinciples and applications /cby Ajay Kumar Ray and Tinku Acharya  aNew DelhibPrentice Hall of Indiac2004  axxv, 602p.c24 cms.  aAcharya, Tinku