Columbia subject headings:
Oberpfalz (Germany)--Economic conditions.
Railroads--Germany--Oberpfalz--History.
Harvard subject headings:
Railroads--Economic aspects--Germany--Oberpfalz.
Railroads--Germany--Bavaria--History.
Railroads--Germany--Oberpfalz--Economic aspects.
Railroads--Germany--Oberpfalz--History.
Railroads--Germany--Oberpfalz--Social aspects.
Railroads--Social aspects--Germany--Oberpfalz.
Princeton subject headings:
Oberpfalz (Germany)--Economic conditions.
Railroads--Germany (West)--Upper Palatinate--History.