Columbia subject headings:
Harvard subject headings:
Architecture, Early Christian.
Architecture, Medieval
Baptisteries--Europe--Catalogs.
Baptisteries--Middle East--Catalogs.
Fonts--Europe--Catalogs.
Fonts--Middle East--Catalogs.
Princeton subject headings:
Architecture, Early Christian.
Architecture, Medieval.
Baptisteries--Europe--Catalogs.
Baptisteries--Middle East--Catalogs.