Columbia subject headings:
Harvard subject headings:
Czechoslovakia--History--1945-1992--Textbooks--Congresses.
Czechoslovakia--History--Intervention, 1968--Historiography--Congresses.
Europe--History--20th century--Study and teaching--Europe--Congresses.
Germany--History--20th century--Textbooks--Congresses.
History--Study and teaching--Czech Republic--Congresses.
History--Study and teaching--Germany--Congresses.
Nineteen eighty-nine, A.D.--Congresses.
Nineteen sixty-eight, A.D.--Congresses.
Revolutions--Europe--History--20th century--Congresses.
Princeton subject headings:
Czechoslovakia--History--1968-1989--Textbooks--Congresses.
Germany--History--20th century--Textbooks--Congresses.
History--Study and teaching--Czech Republic--Congresses.
History--Study and teaching--Germany--Congresses.