Columbia subject headings:
Gardens, Baroque--History.
Gardens--Austria--History.
Gardens--Germany--History.
Zoos--Germany--History.
Harvard subject headings:
Gardens, Baroque--Austria.
Gardens, Baroque--Germany.
Gardens--Austria--History.
Gardens--Germany--History.
Zoos--Austria--History.
Zoos--Germany--History.
Princeton subject headings:
Gardens, Baroque--History.
Gardens--Austria--History.
Gardens--Germany--History.
Zoos--Germany--History.