Columbia subject headings:
Harvard subject headings:
Ballads, Japanese--History and criticism
Japanese poetry--Heian period, 794-1185--History and criticism
Ryōjin hishō
Songs, Japanese--History and criticism.
Princeton subject headings:
Ballads, Japanese--History and criticism.
Japanese poetry--Heian period, 794-1185--History and criticism.
Ryōjin hishō.
Songs, Japanese--History and criticism.