Conditions économiques 9 Economic conditions Economic history 9 Histoire 8 History 8 Economics 4 Economic aspects 3 HISTORY 3 American literature 2 Appreciation 2 Appréciation 2 Boekwezen 2 Book industries and trade 2 Books & Reading 2 Books and reading 2 Changement social 2 Christianity 2 Culture populaire 2 Diplomatic relations 2 Églises protestantes 2 Foreign relations 2 History of doctrines 2 History, 19th Century 2 Industrie 2 LITERARY CRITICISM 2 Leesgewoonten 2 Littérature américaine 2 Livres 2 Médecine 2 National characteristics, American 2