00403nam a2200157 a 450000500170000000800410001703500190005810000290007722200110010624500450011730000100016236200280017290400150020090500130021599900170022820210219152845.0991125n                      000 0 spa u  aUPN01000063539  aArellano Carrillo, Cesar  aPLEXOS  aAlgunas ideas sobre educar o educación  a21-24  a1994 No. 10, jul.-sept.  aACb001350  aArticulo  c62168d62168