Columbia subject headings:
Euripides--Characters--Heroes.
Euripides--Criticism and interpretation.
Euripides--Knowledge and learning.
Folklore.
Heroes in literature.
Mythology in literature.
Harvard subject headings:
Euripides--Criticism and interpretation.
Heroes in literature
Mythology, Greek, in literature.
Princeton subject headings:
Euripides--Characters--Heroes.
Euripides--Criticism and interpretation.
Heroes in literature.
Mythology in literature.