Education 37 Study and teaching 20 Education, Higher 14 PUBLICACIONES PERIODICAS 14 History and criticism 13 Research 13 History 12 Máis ... Philosophy 11 Economic conditions 9 Mathematics 7 Social conditions 7 Antiquities 6 Éducation 6 Indians of South America 6 Universities and colleges 6 Zeitschrift 6 Civilization 5 Economics 5 Language and languages 5 Science 5 Social aspects 5 Social sciences 5 Archaeology 4 Communication 4 Educational psychology 4 Enseignement supérieur 4 Étude et enseignement 4 International law 4 Latin American literature 4 Linguistics 4 menos ...