History 306 Historia 128 Philosophy 109 Politics and government 85 Novela 62 History and criticism 56 Filosofía 54 Criticism and interpretation 50 Social aspects 48 Literatura europea 46 Capitalism 43 Music 43 Political science 41 Communism 38 Social conditions 36 Political aspects 33 Civilization 29 Socialism 29 Música 27 Capitalismo 25 Spanish fiction 25 Aspectos sociales 24 Economic aspects 24 Comunismo 22 Democracy 22 Philosophy, German 22 Aesthetics 21 Política y gobierno 21 French fiction 19 Historia y crítica 18