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Message * Ėkologicheskie Problemy Unikalʹnykh Prirodnykh i Antropogennykh Landshaftov Materialy Vserossiĭskoĭ Nauchno-Prakticheskoĭ Konferent︠s︡ii, 29 Noi︠a︡bri︠a︡ 2007 Goda : Posvi︠a︡shchaetsi︠a︡ 90-Letii︠u︡ Professora P.G. Oshmarina - 583970587X - 9785839705876