Columbia subject headings:
Harvard subject headings:
Enemies in literature--History--Congresses.
Enemies--Europe--Historiography--Congresses.
Enemies--France--History--Congresses.
Enemies--Germany--History--Congresses.
Enemies--Russia--History--Congresses.
Enemies--Social aspects--Europe--History--Congresses.
Enemies--Soviet Union--History--Congresses.
Princeton subject headings:
Enemies in literature--History--Congresses.
Enemies--Europe--Historiography--Congresses.
Enemies--France--History--Congresses.
Enemies--Germany--History--Congresses.
Enemies--Russia--History--Congresses.
Enemies--Social aspects--Europe--History--Congresses.
Enemies--Soviet Union--History--Congresses.