00370nam a22001217a 4500020001800000082002000018100002300038245008600061260003400147300001900181650002700200700002100227  a9780070992566  a515.35  bCOD/T  aCoddington, Earl A  aTheory of ordinary differential equations/cEarl A Coddington and Norman Levinson  aChennai:bMcGraw Hill,c2018.  a429p. ;b21cm.  aDifferential Equations  aLevinson, Norman