TY  - GEN
AU  - Valacich, Joseph S.
AU  - George, Joye F.
TI  - Essentials of systems analysis and design
SN  - 9788120345584
U1  - 004.21 
PY  - 2012///
CY  - New Delhi
PB  - PHI Learning
KW  - System analysis
KW  - System design
ER  -