Columbia subject headings:
Crypts--France--Pictorial works.
Religious architecture--France--History--To 1500--Pictorial works.
Harvard subject headings:
Architecture, Romanesque--France--History.
Church architecture--France--History.
Crypts--France--History--Catalogs.
Crypts--France--History.
Princeton subject headings:
Crypts--France--History--Catalogs.