TY  - BOOK
AU  - Valacich; Joseph S,George; Joey F, Hoffer; Jeffrey A.
TI  - Essentials of systems analysis and design
SN  - 9788120345584
U1  - 004.21 VALJ 
PY  - 2012///
CY  - New Delhi
PB  - PHI Learning Pvt Ltd
ER  -