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2. Geochemistry and groundwater formation Processes in the southern urals;Abdrakhmanov,2010
3. Characteristics of filtration capacity of freshwater bivalve mollusks of the family Unionidae middle reaches of the Ural River;Alekhina;Vestnik of the Orenburg State University,2013
4. Current conditions and geoecological problems of the Ural River basin water use;Alferov,2015
5. The Caspian Sea region: environmental change;Barannik;Ambio,2004