Estland 540 History 387 Geschichte 135 Estonia 118 Politics and government 94 World War, 1939-1945 64 Folklore 44 Foreign relations 37 History and criticism 35 Baltikum 34 Estnisch 34 Tallinn 34 Russland 31 Social life and customs 29 Civilization 27 Intellectual life 25 1991- 24 Estonians 24 Biography 23 Kultur 23 Sowjetunion 21 Besetzung 20 Lettland 19 Social conditions 19 Architecture 18 Autonomy and independence movements 18 Economic conditions 17 Estonian language 16 Ethnology 16 Außenpolitik 15