Columbia subject headings:
Gardens, Dutch--Congresses.
Gardens--Europe--Design--History--17th century--Congresses.
Harvard subject headings:
Gardens, Dutch--Congresses.
Gardens--Europe--Design--History--17th century--Congresses.
Landscape gardening--Netherlands--History--17th century--Congresses.
Princeton subject headings:
Gardens, Dutch--Congresses.
Gardens--Europe--Design--History--17th century--Congresses.