Columbia subject headings:
Harvard subject headings:
Bergisches Land (Germany)--Buildings, structures, etc.
Bergisches Land (Germany)--Economic conditions.
Düsseldorf (Germany)--Buildings, structures, etc.
Düsseldorf (Germany)--Economic conditions.
Industrial buildings--Conservation and restoration--Germany--Bergisches Land.
Industrial buildings--Conservation and restoration--Germany--Düsseldorf.
Industries--Social aspects--Germany--Bergisches Land--History.
Industries--Social aspects--Germany--Düsseldorf--History.
Urbanization--Germany--Bergisches Land--History.
Urbanization--Germany--Düsseldorf--History.
Princeton subject headings:
Industrial buildings--Conservation and restoration--Germany--Bergisches Land.
Industrial buildings--Conservation and restoration--Germany--Düsseldorf.
Industries--Social aspects--Germany--Bergisches Land--History.
Industries--Social aspects--Germany--Düsseldorf--History.
Urbanization--Germany--Bergisches Land--History.
Urbanization--Germany--Düsseldorf--History.