Columbia subject headings:
Japanese poetry--To 1600--History and criticism.
Ogura hyakunin isshu.
Waka--History and criticism.
Harvard subject headings:
Japanese poetry--To 1600--History and criticism
Ogura hyakunin isshu.
Waka--History and criticism
Princeton subject headings:
Japanese poetry--To 1600--History and criticism.
Ogura hyakunin isshu.
Waka--History and criticism.