TY  - BOOK
AU  - Nagrath, I. J.
AU  - Gopal, M.
TI  - Systems Modelling and Analysis 
SN  - 0074517872
U1  - 003.3 
PY  - 1982///
CY  - New Delhi : 
PB  - Tata McGraw-Hill, 
KW  - Computer Modelling
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-07-451787-2.pdf
ER  -