Columbia subject headings:
Harvard subject headings:
Akita-han (Japan)--Social policy.
Mineral industries--Japan--Akita-han--History.
Mines and mineral resources--Japan--Akita-han--History.
Princeton subject headings:
Akita-han (Japan)--Social policy.
Mineral industries--Japan--Akita-han--History.
Mines and mineral resources--Japan--Akita-han--History.