Columbia subject headings:
Europe--History.
Salt industry and trade--Europe--History.
Salt mines and mining--Europe--History.
Harvard subject headings:
Bavaria (Germany)--Commerce--Germany--Swabia.
Bavaria (Germany)--Commerce--Switzerland.
Salt industry and trade--Political aspects--Germany--Bavaria--History.
Salt industry and trade--Political aspects--Germany--Swabia--History.
Salt industry and trade--Political aspects--Switzerland--History.
Swabia (Germany)--Commerce--Germany--Bavaria.
Swabia (Germany)--Commerce--Switzerland.
Switzerland--Commerce--Germany--Bavaria.
Switzerland--Commerce--Germany--Swabia.
Princeton subject headings:
Bavaria (Germany)--Commerce--Germany--Swabia.
Bavaria (Germany)--Commerce--Switzerland.
Salt industry and trade--Political aspects--Germany--Bavaria--History.
Salt industry and trade--Political aspects--Germany--Swabia--History.
Salt industry and trade--Political aspects--Switzerland--History.
Swabia (Germany)--Commerce--Germany--Bavaria.
Swabia (Germany)--Commerce--Switzerland.
Switzerland--Commerce--Germany--Bavaria.
Switzerland--Commerce--Germany--Swabia.