Preventing school failure : the relationship between preschool and primary education : proceedings of a workshop on preschool research held in Bogota, Colombia, 26-29 May 1981 - Ottawa, Ont. : International Development Research Centre, 1983 - 178 p. IDRC-172e Subjects--Topical Terms: Education, Primary--CongressesEducation, Preschool--Congresses LC Class. No.: LB1140 / P7