History 10 European history 9 Asian history 8 History of the Americas 8 Marxism & Communism 8 Politics & government 7 Literature: history & criticism 6 Social & cultural history 6 Social & political philosophy 6 20th century history: c 1900 to c 2000 5 History of science 5 Revolutionary groups & movements 5 Revolutions, uprisings, rebellions 5 Russian Revolution 5 Social & cultural anthropology, ethnography 5 Biography: literary 4 Economics 4 Political ideologies 4 Socialism & left-of-centre democratic ideologies 4 Biology, life sciences 3 Ethnic studies 3 Film theory & criticism 3 Humanities 3 Philosophy 3 Political science & theory 3 Regional studies 3 Western philosophy, from c 1900 - 3 Agriculture & farming 2 Bibliographies, catalogues 2 Black & Asian studies 2