000 00604nam a2200193Ia 4500
919 _a046062
082 _a515.35
_bN59.1
100 _aForsyth, Andrew Russell.
245 _aTheory of differential equations
_bP.1
_cby Andrew Russell Forsyth
260 _aNew York
_bDover Publications
_c1959
300 _axiii, 344p.
690 _aDifferential equations
904 _aExact Equations and Pfaff's problem
999 _c44319
_d44319