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Message * Putevoditelʹ Geologicheskoĭ Ėkskursii Po Nefti︠a︡nym Raĭonam Volgo-Uralʹskogo Regiona i Razrezam Verkhnego Dokembrii︠a︡ i Paleozoi︠a︡ I︠u︡zhnogo Urala - 5892040097 - 9785892040099