TY JOUR TI Coal chemical research in the Vorkuta region of the Komi ASSR (1930-1950s): organization prerequisites, development, results KW Komi ASSR KW Vorkuta region KW repressed scientists KW coal chemical research KW coal industry JO Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences AU Simakova, S.A. PY 2026 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"