Columbia subject headings:
Harvard subject headings:
Athens (Greece)--Foreign relations--Greece--Sparta (Extinct city)
Delian League, First, 5th century, B.C.
Delian League.
Sparta (Extinct city)--Foreign relations--Greece--Athens.
Princeton subject headings:
Delian League, First, 5th century B.C.
Greece--Politics and government--To 146 B.C.