00399nam a2200157 a 450000500170000000800410001703500190005810000300007722200110010724500400011830000100015836200280016890400150019690500130021199900170022420210219152955.0991125n 000 0 spa u aUPN01000070086 aAlcantar G., Ma. Josefina aPLEXOS aCrisis de valores en la educacioĢn a12-13 a1994 No. 10, jul.-sept. aACb007897 aArticulo c65217d65217