Columbia subject headings:
Harvard subject headings:
Cold War
Estonia--Foreign relations--Soviet Union.
Estonia--History--1940-1991.
Estonia--Politics and government--1940-1991.
Estonia--Social conditions--20th century.
Social change--Estonia--History--20th century.
Soviet Union--Foreign relations--Estonia.
Princeton subject headings:
Cold War.
Estonia--Foreign relations--Soviet Union.
Estonia--History--1940-1991.
Estonia--Politics and government--1940-1991.
Estonia--Social conditions--20th century.
Social change--Estonia--History--20th century.
Soviet Union--Foreign relations--Estonia.