Columbia subject headings:
Art, Luxembourg.
Art, Romanesque--Belgium.
Art, Romanesque--Luxembourg.
Art--Belgium.
Harvard subject headings:
Architecture, Romanesque--Belgium.
Architecture, Romanesque--Flanders.
Architecture, Romanesque--Luxembourg.
Art, Romanesque--Belgium.
Art, Romanesque--Luxembourg.
Church architecture--Belgium.
Church architecture--Flanders.
Church architecture--Luxembourg.
Princeton subject headings:
Art, Luxembourg.
Art, Romanesque--Belgium.
Art, Romanesque--Luxembourg.
Art--Belgium.