Columbia subject headings:
Omoro sōshi.
Ryukyuan poetry--History and criticism.
Songs, Ryukyuan--History and criticism.
Waka--History and criticism.
Harvard subject headings:
Omoro sōshi.
Ryukyuan poetry--History and criticism--Theory, etc.
Songs, Ryukyuan--Texts--History and criticism.
Waka--History and criticism
Princeton subject headings:
Omoro sōshi.
Ryukyuan poetry--History and criticism--Theory, etc.
Songs, Ryukyuan--Texts--History and criticism.
Waka--History and criticism.