Columbia subject headings:
Czechoslovakia--Foreign relations--Soviet Union.
Czechoslovakia--Politics and government--1945-1992.
Sejna, Jan.
Soviet Union--Foreign relations--Czechoslovakia.
Harvard subject headings:
Sejna, Jan, 1927-
Soviet Union--Foreign relations--1945-1991.
Soviet Union--Military policy.
Princeton subject headings:
Czechoslovakia--Foreign relations--Soviet Union.
Czechoslovakia--Politics and government--1945-1992.
Sejna, Jan.
Soviet Union--Foreign relations--Czechoslovakia.