Columbia subject headings:
Germans--Baltic States--History--20th century.
Germans--Government policy--Baltic States--History--20th century.
Germans--Russia--History--20th century.
Russia--Ethnic relations.
Harvard subject headings:
Germans--Baltic States--History--20th century.
Germans--Russia--History--20th century.
Russia--Ethnic relations--History--20th century.
Princeton subject headings:
Germans--Russia--History.
Russia--History.