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Message * Problemy Nedropolʹzovanii︠a︡ Materialy Ii Vserossiĭskoĭ Molodezhnoĭ Nauchno-Prakticheskoĭ Konferent︠s︡ii, 12-15 Fevrali︠a︡ 2008 G. - 5769119101 - 9785769119101