000			00339nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a9.78E+12
082			_a515
082			_b35 FOR
100			_aForsyth A.R.
245		2	_aA Treatise on Defferenti
260			_aNew York
260			_bDover PuB.
260			_c1885
300			_a579
999			_c39919 _d39919