History 510 Education 272 Educación 259 History and criticism 253 Historia 180 Filología 137 Classical philology 128 more ... Filología clásica 128 Criticism and interpretation 125 Philosophy 116 General 115 Politics and government 114 Rural conditions 105 Condiciones rurales 104 Literatura latinoamericana 75 Social conditions 74 Ciencias sociales 71 Spanish literature 70 Agricultura 69 Publicaciones periódicas 54 Social Science 54 Tecnología 54 Agriculture 53 Medicina 53 Social aspects 53 Study and teaching 53 Technology 50 Economic conditions 48 Science 48 Civilization 45 less ...