Columbia subject headings:
Harvard subject headings:
Apple industry--Japan--Aomori-ken--History.
Farm life--Japan--Aomori-ken--History.
Rice--Japan--Aomori-ken--History.
Princeton subject headings:
Apple industry--Japan--Aomori-ken--History.
Farm life--Japan--Aomori-ken--History.
Rice--Japan--Aomori-ken--History.