History 62,344 World War, 1939-1945 18,488 Jews 17,399 Politics and government 15,317 Holocaust, Jewish (1939-1945) 12,005 Foreign relations 6,634 History and criticism 5,329 Relations 4,757 Economic conditions 4,743 Biography 4,711 Ethnic relations 4,443 Social conditions 4,244 Holocaust survivors 3,815 Intellectual life 3,548 Underground movements 3,462 Polish people 3,396 Polish literature 3,316 Histoire 2,729 Social life and customs 2,650 International relations 2,559 Civilization 2,429 Diplomatic relations 2,372 Economic policy 2,370 Church history 2,364 Women 2,363 Sources 2,352 Political science 2,318 Atrocities 2,250 Education 2,178 Persecutions 1,986 Campaigns 1,947 Theater 1,871 Law and legislation 1,837 World War, 1914-1918 1,835 Synagogues 1,808 Antiquities 1,765 Polish language 1,763 Periodicals 1,710 Description and travel 1,677 Social aspects 1,656 Economic history 1,655 Jewish ghettos 1,653 Video tapes 1,647 History, Military 1,641 Political activity 1,624 Study and teaching 1,552 Architecture 1,469 Children 1,413 Art 1,387 Criticism and interpretation 1,385 Emigration and immigration 1,377 Forced labor 1,372 Concentration camps 1,354 Music 1,344 Catholic Church 1,339 Art, Polish 1,319 Nobility 1,309 Economic aspects 1,304 Travel 1,253 Historiography 1,213 Political aspects 1,207 Law 1,202 Authors, Polish 1,180 Bibliography 1,159 Germans 1,158 Communism 1,134 Public opinion 1,133 Jewish children in the Holocaust 1,130 Armed Forces 1,100 Agriculture 1,082 Church and state 1,070 Juifs 1,025 Politicians 1,015 Buildings, structures, etc 993 Guerre mondiale, 1939-1945 990 Manners and customs 987 Regimental histories 985 Statistics 977 Men 972 Prisoners of war 960 Congresses 942 Generals 924 Peasants 918 Clergy 917 Philosophy 912 Boundaries 905 Rabbis 892 Motion pictures 883 Statesmen 878 Soldiers 869 Anti-communist movements 848 Working class 843 Families 842 Prisoners and prisons, German 825 Kings and rulers 818 Excavations (Archaeology) 812 Antisemitism 801 Political prisoners 795 Composers 789 Nationalism 786