Columbia subject headings:
Harvard subject headings:
Belgium--Civilization--German influences.
Belgium--Intellectual life--19th century.
Belgium--Intellectual life--20th century.
Belgium--Relations--Germany.
Germany--Relations--Belgium.
Princeton subject headings:
Belgium--Civilization--German influences.
Belgium--Intellectual life--19th century.
Belgium--Intellectual life--20th century.
Belgium--Relations--Germany.
Germany--Relations--Belgium.