00486cam a22001814a 4500003001000000005001700010008004100027040002500068041000800093044000700101080001000108100002400118245004800142260003900190650003500229655001900264700002100283AR-SsjUIB20250710155123.0250429s1972    ii            000 0 eng d  aAR-SsjUIBcAR-SsjUIB0 aeng  aii  a517.91 aCoddington, Earl A.10aTheory of ordinary differenttial equations.  aBombay :bTata McGraw-Hill,c1972. 7aEcuaciones diferenciales2lemb 7aLibro2unescot1 aLevinson, Norman