Columbia subject headings:
Germany--Emigration and immigration--History--20th century.
Russians--Germany--Munich--History--20th century.
Soviet Union--Emigration and immigration--History.
Harvard subject headings:
Germany--Foreign relations--Soviet Union.
Russians--Germany--Munich--History--20th century.
Russians--Germany--Munich--Political activity.
Soviet Union--Foreign relations--Germany.
Princeton subject headings:
Germany--Emigration and immigration--History--20th century.
Russians--Germany--Munich--History--20th century.
Soviet Union--Emigration and immigration--History.