Zokirovich, Namazov Sunnat, and Doniyarov Nodirjon Abdihakimovich. “Physical-Mechanical Properties and Chemistry Study of Brown Coal”. European Multidisciplinary Journal of Modern Science 16 (March 28, 2023): 83–86. Accessed November 21, 2024. https://emjms.academicjournal.io/index.php/emjms/article/view/905.