History 17,898 Historia 9,004 General 7,734 Education 6,603 Educación 5,755 Philosophy 5,620 History and criticism 5,319 Politics and government 4,382 Social aspects 3,679 Ciencias sociales 3,621 Law and legislation 3,453 Criticism and interpretation 3,184 Filosofía 3,183 Law 2,987 Social conditions 2,980 Study and teaching 2,973 Research 2,708 Science 2,629 Publicaciones periódicas 2,611 Derecho 2,420 Psicología 2,372 Tecnología 2,285 Technology 2,281 Periodicals 2,279 Medicina 2,143 Economic conditions 2,115 Social Science 2,050 Psychology 2,047 Histoire 1,999 Public administration 1,925