000 00293nam a2200109Ia 4500
008 180612s9999||||xx |||||||||||||| ||und||
041 _aen
100 _aFrank agres
245 0 _aTheory and problems of differential Equations
260 _anew york
_bmcgraw hill book company
_c1972
942 _cPR
999 _c39832
_d39832