History 47 Bilingualism 31 Balance sheet 30 Education 27 Reports on progress in physics 25 Balance of power 24 Economics 23 Literature 21 Philosophy 21 History and criticism 20 Management 19 Women 18 Language and languages 17 Language 16 Law and legislation 16 English language 15 Human rights 15 International commerce 15 International relations 15 Social conditions 15 Balance of payments 14 Sociolinguistics 14 Constitutional law 13 English literature 13 Foreign relations 13 Religion 13 Christianity 12 Economic development 12 Education, Bilingual 12 Language policy 12