Columbia subject headings:
Harvard subject headings:
Aral Sea (Uzbekistan and Kazakhstan)--Social conditions.
Aral Sea (Uzbekistan and Kazakhstan)--Water level--Environmental aspects.
Cossacks--Russia (Federation)--Social conditions.
Kazakhstan--Description and travel.
Nature--Effect of human beings on--Aral Sea (Uzbekistan and Kazakhstan)
Schütz, Helga, 1937---Travel--Kazakhstan.
Princeton subject headings:
Kazakhstan--Description and travel.