History 10 510 General 5 809 Historia 5 223 Education 4 448 Educación 3 981 Philosophy 3 268 History and criticism 2 902 mer ... Ciencias sociales 2 874 Politics and government 2 526 Publicaciones periódicas 2 505 Filosofía 2 486 Periodicals 2 358 Tecnología 2 139 Technology 2 073 Medicina 2 064 Psicología 2 060 Science 1 999 Social Science 1 951 Social aspects 1 922 Study and teaching 1 844 Criticism and interpretation 1 829 Derecho 1 778 Research 1 675 Psychology 1 657 Literatura 1 617 Law 1 608 Agricultura 1 600 Agriculture 1 590 Literature 1 559 Management 1 440 mindre ...