00938nam0-22003251i-450-99000105806040332120100308102250.0000105806FED01000105806(Aleph)000105806FED0100010580620001205d1949----km-y0itay50------baengPfaff's Problem and its GeneralizationsBy J.A. Schouten and W.V.D. KulkOxfordClarendon Press1949xvi, 542 p.23 cmEquazioni differenziali e integroDifferenziali517.37Schouten,J.A.22783Kulk,Wouter van derITUNINARICAUNIMARCBK99000105806040332128-D-11958MA115-0201581FI14-E-11440MA1FI1MA1Pfaff's problem and its generalizations277439UNINA