Columbia subject headings:
Harvard subject headings:
Nagano-ken (Japan)--History.
Niigata-ken (Japan)--History.
Roads--Japan--Nagano-ken--History.
Princeton subject headings:
Nagano-ken (Japan)--History.
Niigata-ken (Japan)--History.
Roads--Japan--Nagano-ken--History.
Roads--Japan--Niigata-ken--History.