Columbia subject headings:
Germans--Russia--History.
Germans--Soviet Union--History.
Russia--Ethnic relations.
Russian Germans--History.
Soviet Union--Ethnic relations.
Harvard subject headings:
Germans--Russia--History.
Germans--Soviet Union--History
Russian Germans--History.
Princeton subject headings:
Germans--Russia--History.
Germans--Soviet Union--History.
Russia--Ethnic relations.
Russian Germans--History.
Soviet Union--Ethnic relations.