TY  - BOOK
AU  - gupta,rajiv
AU  - nagrath,l .j
TI  - Introduction To Systems / 
SN  - 8122415997
U1  - 530.15/GUP 
PY  - 2005///
CY  - new delhi
PB  - new age international ( p) limited , publishers
KW  - SYSTEM ANALYSIS
ER  -