Alfianita, L. RELATIONSHIP OF SIEVING GRAIN SIZE FRACTION WITH MACERAL COMPOSITION AND QUALITY FOR COAL SEAM A1 BANKO BARAT.

Alfianita, Lia. RELATIONSHIP OF SIEVING GRAIN SIZE FRACTION WITH MACERAL COMPOSITION AND QUALITY FOR COAL SEAM A1 BANKO BARAT.

Alfianita, Lia. RELATIONSHIP OF SIEVING GRAIN SIZE FRACTION WITH MACERAL COMPOSITION AND QUALITY FOR COAL SEAM A1 BANKO BARAT.