Columbia subject headings:
Espionage--Greece--History.
Greece--Politics and government--To 146 B.C.
Proxenies (Greek officials)
Harvard subject headings:
Diplomatic and consular service, Greek.
Espionage--Greece.
Proxenies (Greek officials)
Princeton subject headings:
Espionage--Greece--History.
Greece--Politics and government--To 146 B.C.
Proxenies (Greek officials)