00371nam a2200157 a 450000500170000000800410001703500190005810000190007722200100009624500360010630000100014236200160015290400150016890500130018399900170019620210219153037.0991125n                      000 0 spa u  aUPN01000074372  aVerdejo, Pilar  aDIDAC  aEducacion y medios tecnologicos  a33-36  a1999 No. 34  aACb012183  aArticulo  c66898d66898