TY  - BOOK
AU  - Ratzan Lee
TI  - Understanding information systems: what they do and why we need them
SN  - 978-81-8408-238-X
U1  - 020 
PY  - 2009///
CY  - New Delhi
PB  - Indiana
KW  - Computer science-popular works
KW  - Information science
KW  - Information storage and retrieval systems
KW  - Mathematics-popular works
ER  -