Columbia subject headings:
Gardens--Germany--History--18th century.
Gardens--Germany--History--19th century.
Gardens--Psychological aspects--History--18th century.
Gardens--Psychological aspects--History--19th century.
Middle class--Social life and customs.
Harvard subject headings:
Gardens--Germany--History--18th century.
Gardens--Germany--History--19th century.
Gardens--Psychological aspects--History--18th century.
Gardens--Psychological aspects--History--19th century.
Middle class--Germany--Social life and customs--18th century.
Middle class--Germany--Social life and customs--19th century.
Middle class--Social life and customs.
Princeton subject headings:
Gardens--Germany--History--18th century.
Gardens--Germany--History--19th century.
Gardens--Psychological aspects--History--18th century.
Gardens--Psychological aspects--History--19th century.
Middle class--Social life and customs.