Columbia subject headings:
Harvard subject headings:
Baltic States--Relations--Russia.
Estonia--Civilization--19th century.
Estonia--Civilization--20th century.
Estonia--Relations--Russia.
Latvia--Civilization--19th century.
Latvia--Civilization--20th century.
Latvia--Relations--Russia.
Russia--Civilization--1801-1917.
Russia--Relations--Baltic States.
Russia--Relations--Estonia.
Russia--Relations--Latvia.
Princeton subject headings:
Estonia--Civilization--19th century.
Estonia--Civilization--20th century.
Estonia--Relations--Russia.
Latvia--Civilization--19th century.
Latvia--Civilization--20th century.
Latvia--Relations--Russia.
Russia--Civilization--1801-1917.
Russia--Relations--Estonia.
Russia--Relations--Latvia.