History 330 World War, 1939-1945 123 Holocaust, Jewish (1939-1945) 109 Jews 108 History and criticism 76 Politics and government 54 Relations 43 more ... Operas 41 Ethnic relations 39 Foreign relations 38 Persecutions 35 Philosophy 35 Roads 32 Histoire 30 Holocaust survivors 28 Polish language 28 Songs (High voice) with piano 28 Antiquities 24 Atrocities 24 Civilization 24 Criticism and interpretation 24 Feature films 23 Polish literature 23 Virtual reality 23 German language 22 Church history 21 World War, 1914-1918 21 Slavic philology 20 Guerre mondiale, 1939-1945 19 Language and languages 19 less ...