Columbia subject headings:
Harvard subject headings:
Ethnic conflict--Europe, Eastern--History--20th century--Congresses.
Ethnic conflict--Europe, Eastern--History--20th century.
Europe, Eastern--Ethnic relations--History--20th century--Congresses.
Europe, Eastern--Ethnic relations--History--20th century.
Europe, Eastern--History, Military--20th century--Congresses.
Europe, Eastern--History, Military--20th century.
Europe, Eastern--Politics and government--20th century--Congresses.
Europe, Eastern--Politics and government--20th century.
Europe, Eastern--Social conditions--20th century--Congresses.
Europe, Eastern--Social conditions--20th century.
Social change--Europe, Eastern--History--20th century--Congresses.
Social change--Europe, Eastern--History--20th century.
Violence--Europe, Eastern--History--20th century--Congresses.
Violence--Europe, Eastern--History--20th century.
War and society--Europe, Eastern--History--20th century--Congresses.
War and society--Europe, Eastern--History--20th century.
World War, 1914-1918--Europe, Eastern--Congresses.
World War, 1914-1918--Europe, Eastern.
World War, 1914-1918--Social aspects--Europe, Eastern--Congresses.
World War, 1914-1918--Social aspects--Europe, Eastern.
Princeton subject headings:
Ethnic conflict--Europe, Eastern--History--20th century.
Europe, Eastern--Ethnic relations--History--20th century.
Europe, Eastern--History, Military--20th century.
Europe, Eastern--Politics and government--20th century.
Europe, Eastern--Social conditions--20th century.
Social change--Europe, Eastern--History--20th century.
Violence--Europe, Eastern--History--20th century.
War and society--Europe, Eastern--History--20th century.
World War, 1914-1918--Europe, Eastern.
World War, 1914-1918--Social aspects--Europe, Eastern.