TY  - BOOK
AU  - Whitten,Jeffrey L.
AU  - Bentley,Lonnie D.
AU  - Barlow,Victor M.
TI  - Systems analysis & design methods
SN  - 0256074933
U1  - 004.21 
PY  - 1989///
CY  - New Delhi
PB  - Galgotia
KW  - System design
KW  - System analysis
ER  -