Columbia subject headings:
Art and geography--Austria--Congresses.
Art and geography--Switzerland--Congresses.
Art--Alps Region--Congresses.
Art--Constance, Lake, Region--Congresses.
Boundaries in art--Congresses.
Harvard subject headings:
Art and geography--Austria--Congresses.
Art and geography--Switzerland--Congresses.
Art--Alps Region--Congresses.
Art--Constance, Lake, Region--Congresses.
Boundaries in art--Congresses.
Princeton subject headings: