00371nam a2200157 a 450000500170000000800410001703500190005810000280007722200100010524500270011530000100014236200160015290400150016890500130018399900170019620210219153031.0991125n 000 0 spa u aUPN01000073783 aGarza, Ma. Teresa de la aDIDAC aEducacioĢn en valores a18-19 a1993 No. 22 aACb011594 aArticulo c66583d66583