TY CONF TI LITHIUM SUBGROUP ELEMENTS IN THE NATURAL OBJECTS OF BLAGOVESHCHENSK’S DISTRICT AMUR REGION KW lithium KW sodium KW potassium KW rubidium KW cesium KW francium KW distribution KW migration KW biological media. JO XIV International Scientific Conference "System Analysis in Medicine" AU Radomskiy, S.M. AU Radomskaya, V.I. PY 2025 PB Far Eastern Scientific Center of Physiology and Pathology of Respiration