Columbia subject headings:
Harvard subject headings:
Farmers--Japan--Diaries.
Farmers--Japan--Nishikanbara-gun--Economic conditions.
Nishiyama, Kōichi, 1908---Diaries.
Princeton subject headings:
Agriculture--Economic aspects--Japan--Niigata-ken--History.
Farm tenancy--Japan--Niigata-ken--History.
Nishiyama, Kōichi, 1908---Diaries.