History 16 Golf 6 Methodology 6 Strategy 6 World War, 1939-1945 6 Research 5 Economic conditions 4 Foreign relations 4 Juvenile literature 4 Social sciences 4 Vietnam War, 1961-1975 4 World politics 4 Armaments 3 Campaigns 3 Children's stories, English 3 Construction 3 Microbiology 3 Personal narratives, American 3 Pictorial works 3 Politics and government 3 War 3 World War III 3 Artillery 2 Cold War 2 Congresses 2 Developing countries 2 Employee motivation 2 English fiction 2 France 2 Japanese occupation 2