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Message * Geotekhnologii︠a︡ : Netradit︠s︡ionnye Sposoby Osvoenii︠a︡ Mestorozhdeniĭ Poleznykh Iskopaemykh Materialy Mezhdunarodnogo Simpoziuma, Moskva, Rossii︠a︡, 17-19 Noi︠a︡bri︠a︡ 2003 G. - 5209023087 - 9785209023081