History Politics and government 518 World War, 1939-1945 426 Biography 339 Islam 245 Campaigns 235 United States 187 Foreign relations 179 Juvenile literature 177 Military art and science 177 Armed Forces 116 History, Military 108 Communism 98 Civilization 93 20th century 90 Malaysia 89 Social conditions 88 Terrorism 84 Sources 83 Pictorial works 80 Economic conditions 77 Great Britain 75 Military policy 75 Fiction 61 Civil War, 1861-1865 60 Malaya 59 World War, 1914-1918 57 World politics 55 Regimental histories 54 Airplanes, Military 52