Columbia subject headings:
Harvard subject headings:
Hachidaishū.
Japanese poetry--To 1600--History and criticism
Kokin wakashū.
Waka--History and criticism
Princeton subject headings:
Japanese poetry--Heian period, 794-1185--History and criticism.
Kokin wakashū.
Music and literature--Japan--History--To 1500.
Music in literature.
Waka--History and criticism.