00470nam a2200169 a 450000500170000000800410001703500190005810000260007722200190010324500740012230000100019636200220020670000270022890400150025590500130027099900170028320210219153310.0991125n                      000 0 spa u  aUPN01000089980  aGuillen, Fedro Carlos  aEDUCACION 2000  aNoticias Cientificas: Camino a la Juventud; La Moralidad de los Ninos  a38-39  a1999 Vol.5, No.52  aBonfil Olivera, Martin  aACb027791  aArticulo  c73479d73479