000 00277nam a2200121Ia 4500
100 _aNagrath/I.J/ Gopal/M
942 _cBK
654 _asystem
245 _aSystems:Modelling and analysis
260 _bTata Mc Graw hill
_aNew Delhi
_c1982
300 _a647
546 _aENGLISH
999 _c19830
_d19830