00326nam a2200133Ia 4500020001500000082001800015100002200033245003800055250001300093260004000106300000900146650001600155700002100171  a0471500208  a515.352 BIR/O  aBirkhoff, Garrett 0aOrdinary Differential Equations    a4 TH ED.  bJohn Wiley And SonsaNew Yorkc1978  a399p  aEquations    aRota, Gian Carlo