1. Brown coals and lignites. Determination of humic acids. (21st December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Brown coals and lignites. Determination of the volatile matter in the analysis sample. Two-furnace method Part 1, (21st December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Brown coals and lignites. Determination of true relative density and apparent relative density. (21st December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Brown coals and lignites. Determination of yield of benzene-soluble extract. Semi-automatic method. (20th December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗