Columbia subject headings:
Metallurgy--Early works to 1800.
Mineral industries--Germany--Saxony--Early works to 1800.
Mining law--Germany--Saxony--Early works to 1800.
Harvard subject headings:
Metallurgy--Early works to 1800.
Mineral industries--Germany--Saxony--Early works to 1800.
Mining law--Germany--Saxony--Early works to 1800.
Princeton subject headings: