TY  - BOOK
AU  - Nagrath I.J.& Gopal, M.
TI  - Systems modelling and analysis
SN  - 0074517872
U1  - 621.3192 
PY  - 1982///
CY  - New Delhi
PB  - Tata McGraw Hill 
KW  - Computer Science
KW  - Electrical & Electronics Engineering
ER  -