000			00276nam a2200133Ia 4500
999			_c20775 _d20775
020			_a9780333535028
100			_aForsythe W
245			_aDigital Control
250			_a1
260			_c1991 _bMACMILLAN _aLondon
300			_axii+256
700			_aGoodall R M
942			_cREF