Columbia subject headings:
Armor, Ancient--Japan.
Japan--History, Military--To 1868.
Japan--Politics and government--To 794.
Mounds--Japan--History--To 1500.
Harvard subject headings:
Armor, Ancient--Japan.
Japan--History--To 645
Military history, Ancient
Mounds--Japan--History.
Princeton subject headings:
Armor, Ancient--Japan.
Japan--History--To 645.
Military history, Ancient.
Mounds--Japan--History.