00733naa#a2200217#i#450# EN\\bibl\69054 20240520184258.1 1994-5655 20230718b2023####ek#y0engy0150####ca RU Izyuryel occurrence of Lower Carboniferous kaolins of the South Timan: occurrence mode, textural features Journal article Syktyvkar FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences" 2023 12 с. Journal article local Каолин. 553.612 Saldin V. A. Burcev I. N. Simakova Yu. S. Shebolkin D. N. Gruzdev D. A. komisc.editorum.ru