00335nam a2200121Ia 4500082002000000100002000020245004800040260004400088300002700132490004400159500000500203700000500208  a515.35bC689.TO  aCole, Randal H.  aTheory of ordinary differential equationsb  aNew YorkbAppleton-Century-Croftsc1968  axi, 273p. Index, Bibl.  aThe Appleton Century mathematics series  a  a