00712nam a22002057a 4500003000400000005001700004008004100021020001500062040000800077082002000085100002800105245011300133250002000246260003300266300001100299650004100310942001200351999001300363952013000376OSt20140324043930.0030206s2002    ck            000 0 spa d  a9681801075  cOSt04221a515.3bB6931 aBoyce, William E.9610600aEcuaciones diferenciales : bY problemas con valores en la frontera / cWilliam E. Boyce; Richard C. Diprima  a3 ed.b9 reimp.  aMéxico : bLimusa, c1991.  a744 p.042LEMBxECUACIONES DIFERENCIALES96107  2ddccBK  c330d330  00102ddc3USAP4050708GRALauspsbuspscGENd2013-04-17l0o515.3 B693p06398r2013-04-17 00:00:00tEj. 1w2013-04-17yBK