000 00000nam a2200000 a 4500
005 20251203111357.0
020 _a818408238
082 _a025.04
_bRAT
100 _aRatzan, Lee
245 _aUnderstanding information systems
_bwhat they do and why we need them
260 _aNew delhi
_bIndiana publishing house
_c2009
300 _axvi,253p.
_c24cm.
_bHB
690 _aInformation storage & retrival system
690 _aInformation system
964 _b
_c
_d
_e
_f
_g_
997 _a151280 C
999 _c123746
_d123746