Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--Description and travel
Gardens--Germany (East)--Potsdam--Guidebooks.
Gardens--Germany--Berlin--Guidebooks.
Parks--Germany (East)--Potsdam--Guidebooks.
Parks--Germany--Berlin--Guidebooks.
Potsdam (Germany)--Description and travel.
Princeton subject headings:
Gardens--Germany--Berlin--History.
Gardens--Germany--Potsdam--History.
Parks--Germany--Berlin--History.
Parks--Germany--Potsdam--History.