Baimolda D, Lennik S.G, Shyngysova Sh, Dosymbek A. DETERMINATION OF TRACE ELEMENTS IN THE COAL BY X-RAY FLUORESCENCE METHOD. ASCRM [Internet]. 2023 Mar. 12 [cited 2026 Sep. 13];(2). Available from: https://ojs.scipub.de/index.php/ASCRM/article/view/1004