History 17 105 Historia 9 001 General 6 955 Education 6 505 Educación 5 758 Philosophy 5 330 History and criticism 5 323 Politics and government 4 055 Ciencias sociales 3 621 Social aspects 3 532 Filosofía 3 188 Criticism and interpretation 3 137 Law and legislation 2 987 Study and teaching 2 852 Social conditions 2 795 Law 2 783 Research 2 645 Publicaciones periódicas 2 611 Science 2 594 Derecho 2 434 Psicología 2 373 Tecnología 2 285 Periodicals 2 275 Technology 2 267 Medicina 2 146 Social Science 2 056 Psychology 2 043 Economic conditions 2 030 Agricultura 1 907 Public administration 1 899