Columbia subject headings:
Harvard subject headings:
Cultural animation--Germany--Ruhr (Region)--History--21st century.
Cultural landscapes--Conservation and restoration--Germany--Ruhr (Region)--History--21st century.
Cultural landscapes--Germany--Ruhr (Region)--History--21st century.
Festivals--Germany--Ruhr (Region)--History--21st century.
International relations and culture--Germany--Ruhr (Region)--History--21st century.
Multiculturalism--Germany--Ruhr (Region)--History--21st century.
Ruhr (Germany : Region)--Civilization--21st century.
Ruhr (Germany : Region)--Cultural policy.
Ruhr (Germany : Region)--Relations.
Princeton subject headings:
Cultural animation--Germany--Ruhr (Region)--History--21st century.
Cultural landscapes--Conservation and restoration--Germany--Ruhr (Region)--History--21st century.
Cultural landscapes--Germany--Ruhr (Region)--History--21st century.
Festivals--Germany--Ruhr (Region)--History--21st century.
International relations and culture--Germany--Ruhr (Region)--History--21st century.
Multiculturalism--Germany--Ruhr (Region)--History--21st century.
Ruhr (Germany : Region)--Civilization--21st century.
Ruhr (Germany : Region)--Cultural policy.
Ruhr (Germany : Region)--Relations.