SUGIARTO, W.; T. LISTYANI; WINARTI. EFFECT OF ASH CONTENT ON COAL QUALITY OF THE LABANAN FORMATION . KURVATEK, [S. l.], v. 8, n. 1, p. 1–6, 2023. DOI: 10.33579/krvtk.v8i1.4020. Disponível em: https://journal.itny.ac.id/index.php/krvtk/article/view/4020. Acesso em: 3 apr. 2025.