Columbia subject headings:
Artisans--Germany--Mark (Grafschaft)--History.
Business networks--Germany--Mark (Grafschaft)--History.
Mark (Grafschaft)--Economic conditions--Statistics.
Mark (Grafschaft)--Economic conditions.
Mark (Grafschaft)--Social conditions.
Metal-workers--Germany--Mark (Grafschaft)--History.
Metalworking industries--Germany--Mark (Grafschaft)--History.
Small business--Germany--Mark (Grafschaft)--History.
Harvard subject headings:
Business networks--Germany--Mark (Grafschaft)--History.
Metal trade--Germany--Mark (Grafschaft)--History.
Metal-work--Germany--Mark (Grafschaft)--History.
Small business--Germany--Mark (Grafschaft)--History.
Princeton subject headings: