TY JOUR TI Element Imbalance among Workers during Solar CellProduction KW occupational safety KW solar cells KW rare and rare earth metals KW toxicity KW elemental composition of hair JO Safety in Technosphere AU Kasatkina, E.A. AU Kontrosh, L.V. AU Hramov, A.V. AU Shumilov, O.I. PY 2020 IS 9 PB INFRA-M Academic Publishing LLC.