Columbia subject headings:
Emscher Landschaftspark (Germany)
Landscape architecture--Germany--Ruhr (Region)
Parks--Germany--Ruhr (Region)
Urban landscape architecture--Germany--Ruhr (Region)
Harvard subject headings:
Emscher Landscape Park (Germany)
Landscape architecture--Germany--Ruhr (Region)
Parks--Germany--Ruhr (Region)
Urban landscape architecture--Germany--Ruhr (Region)
Princeton subject headings: