TY JOUR TI The role of fluids in the chemical composition of the upper holocene sediment layer in the russian sector of the South-East Baltic KW South-East Baltic KW bottom sediments KW cluster analysis KW groundwater JO Russian Journal of Earth Sciences AU , .. AU , .. AU , .. AU , .. PY 2020 IS 20 PB Геофизический центр Российской Академии Наук