000 00250nam a2200109Ia 4500
008 200701s2002 xx 000 0 eng d
100 _aNAGRATH.I.J
245 0 _aSYSTEMS MODELLING AND METHODS
260 _bTMH
_c2002
300 _a647
942 _2ddc
_cGE
999 _c1979
_d1979