Columbia subject headings:
Aeschylus--Versification.
Iambic trimeter.
Sophocles--Versification.
Harvard subject headings:
Aeschylus--Versification.
Iambic trimeter.
Sophocles--Versification.
Princeton subject headings:
Aeschylus--Versification.
Iambic trimeter.
Sophocles--Versification.