TY  - BOOK
AU  - Awad Elias M
TI  - System analysis and design
T2  - Irwin Series in Information and Decision Sciences
U1  - X:8:(D6,9(B), M9/TD3 
PY  - 1989///
CY  -  New Delhi 
PB  - Galgotia Publications        
N1  - Glossary P 502-15
ER  -