Columbia subject headings:
Astrakhanskai︠a︡ oblastʹ (Russia)--History.
Natural resources--Russia (Federation)--Astrakhanskai︠a︡ oblastʹ.
Harvard subject headings:
Princeton subject headings:
Astrakhanskai︠a︡ oblastʹ (Russia)--History.
Natural resources--Russia (Federation)--Astrakhanskai︠a︡ oblastʹ.