Columbia subject headings:
Harvard subject headings:
Harz Mountains (Germany)--Maps--Early works to 1800.
Lower Saxony (Germany)--Maps--Early works to 1800.
Mineral industries--Germany--Harz Mountains--Maps--Early works to 1800.
Mines and mineral resources--Germany--Harz Mountains--Maps--Early works to 1800.
Princeton subject headings:
Harz Mountains (Germany)--Maps--Early works to 1800.
Maps.
Mineral industries--Germany--Harz Mountains--Maps--Early works to 1800..
Mines and mineral resources--Germany--Harz Mountains--Maps--Early works to 1800.