Columbia subject headings:
Harvard subject headings:
Punk rock music--Germany--Ruhr (Region)--History--Exhibitions.
Ruhr (Germany : Region)--Social conditions--Exhibitions.
Subculture--Germany--Ruhr (Region)--History--Exhibitions.
Youth--Germany--Ruhr (Region)--History--Exhibitions.
Princeton subject headings:
Punk rock music--Germany--Ruhr (Region)--History--Exhibitions.
Ruhr (Germany : Region)--Social conditions--Exhibitions.
Subculture--Germany--Ruhr (Region)--History--Exhibitions.
Youth--Germany--Ruhr (Region)--History--Exhibitions.