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Message * Ėkologo-Geograficheskie Issledovanii︠a︡ V Rechnykh Basseĭnakh Materialy Vtoroĭ Vserossiĭskoĭ Nauchno-Prakticheskoĭ Konferent︠s︡ii, 8-10 Okti︠a︡bri︠a︡ 2004 G. - 5885192855 - 9785885192859