Columbia subject headings:
Architecture, Gothic--Congresses.
Church architecture--Congresses.
Decoration and ornament, Architectural--Congresses.
Doorways, Gothic--Congresses.
Relief (Sculpture), Gothic--Congresses.
Sculpture, Gothic--Congresses.
Harvard subject headings:
Architecture, Gothic--Congresses.
Church architecture--Europe--Congresses.
Doorways--Europe--Congresses.
Sculpture, Gothic--Congresses.
Stone carving--Europe--Congresses.
Princeton subject headings:
Architecture, Gothic--Congresses.
Church architecture--Europe--Congresses.
Doorways--Europe--Congresses.
Sculpture, Gothic--Congresses.
Stone carving--Europe--Congresses.