00737nam a2200157Ia 4500 190328s9999||||xx |||||||||||||| ||und|| NITIL NITIL 21st 373.98 U58S United Nations. Economic and Social Council Secondary education, social structure and development in Latin America New York UNESCO 1971 61p. Document presented jointly by the economic commission for Latin America and the Latin American Institute for Economic and Social planning at the Conference of Ministers of education and those responsible for the promotion of science and technology in rela Education, Secondary; Social structure; Education BKS 38044 38044 0 0 DDC 0 0 NITIL NITIL 2019-04-03 0 373.98 U58S 79629 2019-04-03 00:00:00 2019-04-03 BKS