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Message * Ėkologii︠a︡ i Innovat︠s︡ii Materialy Vii Mezhdunarodnoĭ Nauchno-Prakticheskoĭ Konferent︠s︡ii, G. Vitebsk, 22-23 Mai︠a︡ 2008 Goda - 9855122097 - 9789855122099