1.
Baimolda Dossan, Cechak Tomas, Shyngysova Sh. X-RAY FLUORESCENCE RESEARCH OF SULPHUR AND ASH CONTENTS IN THE COALS OF KAZAKHSTAN. ERM [Internet]. 2022 Dec. 11 [cited 2026 Jun. 30];(1). Available from: https://ojs.publisher.agency/index.php/ERM/article/view/490