History 528 Education 265 History and criticism 257 Educación 247 Historia 182 Filología 136 Criticism and interpretation 129 more ... Philosophy 129 Classical philology 128 Filología clásica 128 Politics and government 119 Rural conditions 107 Condiciones rurales 105 General 104 Social conditions 77 Literatura latinoamericana 75 Ciencias sociales 68 Spanish literature 66 Agricultura 60 Social aspects 60 Social Science 54 Study and teaching 49 Civilization 48 Medicina 48 Publicaciones periódicas 48 Science 47 Agriculture 45 Tecnología 45 Economic conditions 44 Literatura 44 less ...