00317nam a2200121Ia 4500082002000000100004200020245003800062250000800100260002900108300002100137500000500158700003200163  a515.35bB619.OD  aBirkhoff, Garrett and Rota, Giancarlo  aOrdinary differential equationsb  a2nd  aLondonbJohn Wileyc1969  axiv, 366p. Index  a  aRota, Giancarlo ; jt. auth.