Columbia subject headings:
Architecture--Composition, proportion, etc.
Cathedrals--Europe.
Church architecture--Europe.
Nidarosdomen.
Harvard subject headings:
Architecture--Composition, proportion, etc.
Cathedrals--Europe
Church architecture--Europe.
Trondhjem. Cathedral.
Princeton subject headings:
Architecture--Composition, proportion, etc.
Cathedrals--Europe.
Church architecture--Europe.
Trondhjem. Cathedral.