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por Loukola-Ruskeeniemi, Kirsti | Uutela, A | Tenhola, Markku | Paukola, T | International Simposium on Environmental Geochemistry, 4 Vail, Colorado, United States 5-10 October 1997.
por Salminen, Reijo | Chekushin, Viktor | Tenhola, Markku | Bogatyrev, Igor V | Glavatskikh, S.P | Fedotova, E | Gregorauskiene, Virgilija | Kashulina, Galina | Niskavaara, Heikki | Polischuok, A | Rissanen, Kristina | Selenok, L | Tomilina, O | Zhdanova, Ludmila.