Analisa XRD Terhadap Perubahan Struktur Dan Kristalinitas Karbonisasi Batubara Sawahlunto – Sijunjung Sumatera Barat: XRD Analysis of Changes in the Structure and Crystallinity of Sawahlunto - Sijunjung West Sumatra Coal Carbonization. st [Internet]. 2019 Jan. 30 [cited 2026 May 1];2(1):88-91. Available from: https://talentaconfseries.usu.ac.id/index.php/st/article/view/321