Columbia subject headings:
Architecture, Gothic.
Architecture--Details.
Architecture--Early works to 1800.
Geometry--Early works to 1800.
Harvard subject headings:
Architecture, Gothic.
Architecture--Details
Architecture--Early works to 1800
Geometry--Early works to 1800
Princeton subject headings:
Architecture, Gothic.
Architecture--Details.
Architecture--Early works to 1800.
Geometry--Early works to 1800.