Columbia subject headings:
Harvard subject headings:
Petroglyphs--Russia (Federation)--Tuvinskai︠a︡ A.S.S.R.
Tuva (Russia)--Antiquities.
Tuvinian (Turkic people)--Antiquities.
Princeton subject headings:
Petroglyphs--Russia (Federation)--Tuva.
Tuva (Russia)--Antiquities.