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Message * Vseukraïnsʹka Naukovo-Praktychna Konferent︠s︡ii︠a︡ Pryrodnycho-Naukova Osvita Shkoli︠a︡riv: Realiï Ta Perspektyvy, 17-19 Veresni︠a︡ 2003 R. - 9665629670 - 9789665629672