000			00291nam a2200133Ia 4500
008			230312s9999||||xx |||||||||||||| ||und||
082			_a515.35 _bZIL-D
100			_aZill Denis G.
245		0	_aDifferential Equations
300			_a775
546			_aEng.
650			_aEconomics
942			_cBK
999			_c2127 _d2127