00977nam2-2200325---450-99000324979020331620090521095618.0000324979USA01000324979(ALEPH)000324979USA0100032497920090521d--------km-y0itay50------baengUS||||||||001yy<<Pt. 1:>> Exact equations and paff's problemAndrew Russell ForsythNew YorkDover publicationss.d.XIII, 344 p.20 cm0010003249782001Theory of differential equationsEquazioni differenziali515.35FORSYTH,Andrew Russell12311ITsalbcISBD990003249790203316515.35 FOR/17189/CBS515.3500220668BKSCIRSIAV79020090521USA010956Exact equations and paff's problem1119730UNISA