Columbia subject headings:
Civilization, Medieval--13th century--Congresses.
Snorri Sturluson, 1179?-1241--Criticism and interpretation--Congresses.
Harvard subject headings:
Snorri Sturluson, 1179?-1241--Congresses.
Snorri Sturluson, 1179?-1241--Criticism and interpretation--Congresses.
Princeton subject headings: