TY - CPAPER AU - V. M. Gavshin AU - M. S. Melgunov TI - RADIOACTIVE AND TRACE-ELEMENT ENRICHMENT OF UPPERMOST BROWN COAL LAYERS: AN ENVIRONMENTAL ASPECT (KANSK -ACHINSK COAL BASIN, WEST SIBERIA) T2 - 6th International Scientific Conference - SGEM PY - 2006 SP - 67 EP - 74 PB - SGEM Scientific GeoConference ER -