Columbia subject headings:
Architecture, Medieval--Great Britain.
Architecture, Medieval--Ireland.
Cathedrals--Great Britain.
Cathedrals--Ireland.
Harvard subject headings:
Architecture, Medieval--Great Britain.
Architecture, Medieval--Ireland.
Cathedrals--Great Britain.
Cathedrals--Ireland.
Princeton subject headings:
Architecture, Medieval--Great Britain.
Architecture, Medieval--Ireland.
Cathedrals--Great Britain.
Cathedrals--Ireland.