Columbia subject headings:
Christianity--Europe--20th century.
Identification (Religion)--20th century.
Nationalism--Europe--20th century.
Harvard subject headings:
Christianity and culture--History--20th century.
Christianity--Europe--20th century.
Europe--Church history--20th century.
National characteristics, European--History--20th century.
Nationalism--History--20th century
Princeton subject headings:
Christianity--Europe--20th century.
Identification (Religion)--20th century.
Nationalism--Europe--20th century.