Ordabayeva A, Meiramov M, Khrupov V. Phenol Extraction from Schistous Tar of Shubarkol Deposit. Kms [Internet]. 2020Dec.31 [cited 2021Sep.16];6(1):42–45. Available from: https://knepublishing.com/index.php/KnE-Materials/article/view/8041