The Holocaust 31 Second World War 16 History 14 Jewish studies 10 European history 9 20th century history: c 1900 to c 2000 8 Genocide & ethnic cleansing 7 Slovenia 7 Social & cultural history 7 Fascism & Nazism 6 Literature & literary studies 4 21st century history: from c 2000 - 3 General & world history 3 Historiography 3 International human rights law 3 Literary studies: fiction, novelists & prose writers 3 Literary studies: general 3 Modern history to 20th century: c 1700 to c 1900 3 Museology & heritage studies 3 Oral history 3 Philosophy 3 Austria 2 Biography: historical, political & military 2 Collected biographies 2 Educational psychology 2 History: earliest times to present day 2 Humanities 2 International relations 2 Judaism 2 Literary studies: from c 1900 - 2