Columbia subject headings:
Strabo. Geography--Criticism, Textual.
Thracians in literature.
Harvard subject headings:
Strabo. Geography--Criticism, Textual.
Thrace--History--Sources.
Thracians in literature.
Thracians--History--Sources.
Princeton subject headings:
Strabo. Geography--Criticism, Textual.
Thrace--History--Sources.
Thracians--History--Sources.