Columbia subject headings:
Japan--History--Heian period, 794-1185.
Kanmu, Emperor of Japan, 737-806.
Harvard subject headings:
Japan--History--Heian period, 794-1185.
Kanmu, Emperor of Japan, 737-806.
Princeton subject headings:
Japan--History--Heian period, 794-1185.
Kanmu, Emperor of Japan, 737-806.