000 00280nam a2200121Ia 4500
008 211209s1929 xx 000 0 und d
041 _aeng
082 _a515.35 N29 FOR
100 _aFORSYTH A R
245 _aTREATISE ON DIFFERENTIAL EQUATIONS
250 _a6 ed.
260 _c1929
999 _c1871
_d1871