000 00266nam a2200121Ia 4500
082 _a621.317 NAG
100 _aNAGRATH, I.J.
110 _aGOPAL, M.
245 _aCONTROL SYSTEM ENGINEERING
260 _bWILEY EASTERN LTD.
_c1978
300 _a491
942 _2ddc
_cB
999 _c41463
_d41463