Columbia subject headings:
Japan--Antiquities.
Mounds--Japan--History--To 1500.
Tombs--Japan--History--To 1500.
Harvard subject headings:
Japan--Antiquities
Japan--History--To 645
Mounds--Japan
Mounds--Japan--History.
Tombs--Japan--History.
Princeton subject headings:
Japan--Antiquities.
Japan--History--To 645.
Mounds--Japan--History.
Mounds--Japan.
Tombs--Japan--History.