TY  - BOOK
AU  - Shelly, Gary B;Cashman, Thomas J;Rosenblatt, Harry J.
TI  - Systems analysis and design methods
SN  - 9788131505496
U1  - 004.21 SHEG 
PY  - 2006///
CY  - New Delhi
PB  - Cengage Learning
KW  - System Analysis & Design
ER  -