共 50 条
- [32] DISTRIBUTION AND COMPOSITION OF INORGANIC MATTER IN BRITISH COALS .3. COMPOSITION OF CARBONATE MINERALS IN COAL SEAMS OF EAST-MIDLANDS COALFIELDS JOURNAL OF THE INSTITUTE OF FUEL, 1970, 43 (354): : 229 - &
- [36] MIDLANDS - TRENT VALLEY BRANCH JOURNAL OF THE OIL & COLOUR CHEMISTS ASSOCIATION, 1978, 61 (05): : 170 - 171