History 130 PUBLICACIONES PERIODICAS 103 History and criticism 85 Economic conditions 82 Economic history 78 Social sciences 73 Periodicals 66 more ... Social conditions 63 Politics and government 57 Philosophy 56 Civilization 55 Education 53 Law 51 Spanish literature 45 Antiquities 40 Medicine 37 Economics 34 Research 34 Study and teaching 33 Science 29 Psychology 28 Spanish philology 28 Political science 27 Latin American literature 26 Agriculture 23 Public health 23 Spanish American literature 23 Spanish language 23 Geography 21 Humanities 20 less ...