共 50 条
- [21] The point of fusion of hard coal COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1920, 171 : 1358 - 1360
- [22] Hard coal in Germany 2012 van de Loo, K. (kai.vandeLoo@gvst.de), 1600, Blackwell Publishing Ltd (149):
- [23] OCCURRENCE OF PHOSPHORUS IN HARD COAL GOSPODARKA SUROWCAMI MINERALNYMI-MINERAL RESOURCES MANAGEMENT, 2010, 26 (01): : 23 - 35
- [24] The effect of air on hard coal COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1910, 150 : 1521 - 1523
- [26] Research on hard coal. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1912, 154 : 1094 - 1097
- [30] Predegassing of coal seams in German hard coal mines Eighth International Mine Ventilation Congress, 2005, 2005 (06): : 197 - 198