Research & information: general 67 Politics & government 65 European history 50 History 42 National liberation & independence, post-colonialism 42 Social & cultural history 42 Society & social sciences 42 History of medicine 36 Medicine 33 Humanities 32 Media studies 32 Sociology 32 Cultural studies 31 Biology, life sciences 30 Social & cultural anthropology, ethnography 30 Society & culture: general 29 Literature: history & criticism 28 Education 27 International relations 27 Colonialism & imperialism 25 History of engineering & technology 25 Second World War 25 History of science 22 Development studies 21 Literary studies: post-colonial literature 21 Postwar 20th century history, from c 1945 to c 2000 21 Technology: general issues 21 British & Irish history 20 Migration, immigration & emigration 19 Sociology & anthropology 19