393 History 151 Political parties 66 Politics and government 34 Communism 26 Methodology 18 Foreign relations 14 Social conditions 13 Civilization 10 Economic conditions 10 Political activity 9 Congresses 9 Islam and politics 8 Description and travel 7 Islam 7 Working class 6 Criticism and interpretation 6 History and criticism 6 Sources 6 Women 5 Communist trials 5 Histoire 5 Study and teaching 4 Historiography 4 Kings and rulers 4 Labor 4 Minorities 4 Nationalism 4 Political prisoners 4 Socialism 4 Students