Columbia subject headings:
Asia, Central.
Herodotus.
Ptolemy, active 2nd century.
Scythians.
Harvard subject headings:
Asia, Central--Historical geography.
Herodotus. History. Book 4--Criticism, Textual.
Onomasiology.
Ptolemy, active 2nd century. Geographia. Book 6--Criticism, Textual.
Scythians.
Semantics
Princeton subject headings:
Asia, Central.
Herodotus.
Ptolemy, active 2nd century.
Scythians.