Christianity 19 Religion & beliefs 12 Roman Catholicism, Roman Catholic Church 11 History 9 European history 7 Development studies 5 Literature: history & criticism 5 Philosophy of religion 5 Asian history 4 Early modern history: c 1450/1500 to c 1700 4 Religion: general 4 Conservation of the environment 3 History of religion 3 Social & cultural history 3 Theology 3 Agriculture & farming 2 Christian life & practice 2 Christian mission & evangelism 2 Christian theology 2 Christian worship, rites & ceremonies 2 Church history 2 Education 2 Ethnic studies 2 Gender studies: women 2 History of the Americas 2 Humanities 2 Modern history to 20th century: c 1700 to c 1900 2 Political structure & processes 2 Politics & government 2 Religion & science 2