World War, 1914-1918 History 111 Fiction 92 Campaigns 87 Economic aspects 68 Politics and government 60 Foreign relations 57 Causes 56 Biography 53 Personal narratives, British 37 Finance 32 Diplomatic history 27 World War, 1939-1945 26 Peace 24 Reparations 24 Territorial questions 21 Economic conditions 20 Soldiers 15 Personal narratives 14 Personal narratives, Australian 14 Literature and the war 13 Poetry 13 History and criticism 12 Influence 12 Naval operations 12 Reconstruction (1914-1939) 12 Sources 12 Naval operations, German 10 Debts, Public 9 Economic history 9