Columbia subject headings:
Beowulf.
Harvard subject headings:
Beowulf
Dragons in literature.
Epic poetry, English (Old)--History and criticism.
Heroes in literature
Monsters in literature
Scandinavia--In literature.
Princeton subject headings:
Beowulf.
Civilization, Anglo-Saxon, in literature.
Civilization, Medieval, in literature.
Epic poetry, English (Old)--History and criticism.