Columbia subject headings:
Czechoslovakia--History--1938-1945--Sources.
Europe--Foreign relations--Sources.
Munich Four-Power Agreement--Sources.
Harvard subject headings:
Czechoslovakia--History--1938-1945--Sources.
Europe--Foreign relations--Sources.
Munich Four-Power Agreement--Sources.
Princeton subject headings:
Czechoslovakia--History--1938-1945--Sources.
Europe--Foreign relations--Sources.
Munich Four-Power Agreement--Sources.