History 132 Foreign relations 15 History and criticism 11 Civilization 10 Politics and government 9 Historiography 8 World War, 1939-1945 8 Ethnology 6 Study and teaching 6 Ethnic relations 5 Koreans 5 Social conditions 5 Textbooks 5 African Americans 4 Chinese literature 4 Economic conditions 4 Economic history 4 History, Military 4 International status 4 Relations 4 Social life and customs 4 Territory, National 4 World history 4 Antiquities 3 Atrocities 3 Diplomatic history 3 Discovery and exploration 3 Economic aspects 3 HISTORY 3 Kings and rulers 3