Physics 88 European history 39 History 28 Agriculture & farming 21 Literature: history & criticism 21 Politics & government 20 History of medicine 19 Migration, immigration & emigration 19 Second World War 17 Postwar 20th century history, from c 1945 to c 2000 15 Social & cultural history 15 France 14 Society & social sciences 14 Sociology 14 Bio-ethics 13 Society & culture: general 11 Political science & theory 10 Education 9 Humanities 9 Literary studies: fiction, novelists & prose writers 9 Gender studies, gender groups 8 Media studies 8 Archaeology 7 Cultural studies 7 Film theory & criticism 7 French 7 Literary studies: from c 1900 - 7 Literary studies: general 7 Literature & literary studies 7 Medieval history 7