00394nam a2200121Ia 4500082002500000100003700025245010500062260002700167300001900194490004900213500000500262700000500267  a379.1120212bUn58.SS  aUNESCO, Statistics, Office of _.  aStatistical study of wastage at school; a study prepared for the International Bureau of Educationb  aParisbThe Auth.c1972  a121p. Appendix  aStudies and surveys in Comparative Education  a  a