Columbia subject headings:
Greek literature--History and criticism.
Literature and society--Greece--Thessaly.
Serfs in literature.
Serfs--Greece--Thessaly--Historiography.
Harvard subject headings:
Slavery (Greek law)
Slavery--Greece--Greece--Thessaly--History.
Princeton subject headings:
Serfdom--Greece--Thessaly--History--Sources.
Serfdom--Greece--Thessaly.