Columbia subject headings:
Harvard subject headings:
Engelberg, Ernst--Congresses.
Historians--Germany--Congresses.
Historiography--History--Congresses.
Markov, Walter M.--Congresses.
Nationalism--History--20th century--Congresses.
Nationalism--History--21st century--Congresses.
Revolutions--History--20th century--Congresses.
Revolutions--History--21st century--Congresses.
Princeton subject headings:
Engelberg, Ernst--Congresses.
Historians--Germany--Congresses.
Historiography--History--Congresses.
Markov, Walter M.--Congresses.
Nationalism--History--20th century--Congresses.
Nationalism--History--21st century--Congresses.
Revolutions--History--20th century--Congresses.
Revolutions--History--21st century--Congresses.