World War, 1939-1945 History 545 Campaigns 159 Foreign relations 127 Politics and government 121 Holocaust, Jewish (1939-1945) 109 Diplomatic history 93 Social conditions 90 Atrocities 72 Jews 69 Social aspects 65 Public opinion 62 History and criticism 58 Causes 57 Social life and customs 57 Propaganda 50 Influence 47 Social history 47 Literature and the war 45 Mass society 45 Economic aspects 44 World War, 1914-1918 44 Underground movements 40 Social surveys 39 National socialism 38 Concentration camps 37 Secret service 37 Women 33 Motion pictures and the war 30 Psychological aspects 25