00306cam a2200169   450000500170000024500450001702000050006210000200006704400050008725000050009204100080009730000050010550000050011083000050011526000090012008200070012920260711133814.0  aProblemas de la educación permanenteb  a  aApps, Jerold W.  a  a  aspa  a  a  v  abc  ab