TY - BOOK ED - Seminario sobre Investigación Preescolar. Bogotá, 1981 TI - Preventing School Failure: The Relationship between Preschool and Primary Education T2 - IDRC ; PY - 1983/// CY - Ottawa : PB - International Development Research Centre (IDRC), KW - EDUCACION PRIMARIA-CONGRESOS, CONFERENCIAS, ETC KW - EDUCACIËN PRESCOLAR-CONGRESOS, CONFERENCIAS, ETC N1 - Bibliografía al final de capítulos ER -