KARO-KARO, Pulung; SEMBIRING, Simon.
Coal Ash Characteristic from Bukit Asam as Raw Material for Ceramics Production.
Jurnal ILMU DASAR, [S.l.], v. 9, n. 2, p. 127-134, july 2008.
ISSN 2442-5613.
Available at: <https://jurnal.unej.ac.id/index.php/JID/article/view/157>. Date accessed: 01 sep. 2024.