000 00282nam a2200121Ia 4500
008 211209s1965 xx 000 0 und d
041 _aeng
082 _a515.35 N65 KEL
100 _aKELLS, LYMAN M
245 _aELEMENTARY DIFFERENTIAL EQUATIONS
260 _c1965
300 _a431
999 _c11043
_d11043