Columbia subject headings:
English language--Old English, ca. 450-1100--Style--Congresses.
English poetry--Old English, ca. 450-1100--History and criticism--Congresses.
Harvard subject headings:
Civilization, Medieval, in literature.
English language--Old English, ca. 450-1100--Style--Congresses.
English poetry--Old English, ca. 450-1100--History and criticism--Congresses.
Princeton subject headings:
English language--Old English, ca. 450-1100--Style--Congresses.
English poetry--Old English, ca. 450-1100--History and criticism--Congresses.