TY  - BOOK
AU  - Clifton,H.D.
TI  - Business data systems: a practical guide to systems analysis and data processing 
SN  - 0130916951 :
AV  - HF5548.2 .C5427 1990 .C5427 1990
U1  - 658/.05 20
PY  - 1990///
CY  - New York
PB  - Prentice Hall
ER  -