Columbia subject headings:
Fruit-culture--Germany--History.
Gardening--Germany--History.
Gardens--Germany--History.
Horticulture--Germany--History.
Harvard subject headings:
Fruit-culture--Germany--Baden-Württemberg--History.
Gardening--Germany--Baden-Württemberg--History.
Horticulture--Germany--Baden-Württemberg--History.
Princeton subject headings:
Fruit-culture--Germany--History.
Gardening--Germany--History.
Gardens--Germany--History.
Horticulture--Germany--History.