SUHARDJO POERTADJI; NUKMAN; MUHAMMAD HIKAM. PENGARUH AGLOMERASI AIR-MINYAK SAWIT TERHADAP KADAR KARBON DAN NILAI KALORI BATUBARA SEMI-ANTRASIT, BITUMINUS DAN SUB-BITUMINUS. Jurnal Sains Materi Indonesia, [S. l.], v. 7, n. 3, p. 68–74, 2006. DOI: 10.17146/jsmi.2006.7.3.4844. Disponível em: https://ejournal.brin.go.id/jsmi/article/view/6473. Acesso em: 15 nov. 2026.