000 00328nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a005.74 ANU/U ANU/U
100 _aANUPAM BISWAS
245 0 _aUNDERSTANDING BUINESS DATA PROCESSING SYSTEMS
260 _bCALICUT UNIVERSITY CENTRAL CO-
_c1987
300 _a253
942 _cTB
999 _c21132
_d21132