TY  - BOOK
AU  - Leon, Alexis
AU  - Leon, Mathews
TI  - Introduction to information systems
SN  - 9788182090101
U1  - 004.21 LEO/I 
PY  - 2004///
CY  - Noida
PB  - Tata McGraw Hill
KW  - INFORMATION SYSTEMS
ER  -