Columbia subject headings:
Greeks--Georgia (Republic)--Rioni River Valley.
Rioni River Valley (Georgia)--Civilization.
Harvard subject headings:
Black sea region--History--Sources.
Colchis--History--Sources.
Georgia (Republic)--History--To 330--Sources.
Greeks--Georgia (Republic)--Rioni River Valley.
Rioni River (Georgia)
Rioni River Valley (Georgia)--Civilization.
Rivers--Religious aspects
Princeton subject headings:
Greeks--Georgia (Republic)--Rioni River Valley.
Rioni River Valley (Georgia)--Civilization.