Kata Kunci Pencarian:
- William Mundy
- Llewellyn Jewitt
- Perpustakaan Pusat Derby
- George Harpur Crewe
- Marmer Hitam Ashford
- William Cavendish, Adipati Keenam Devonshire
- Derby Philosophical Society
- Museum dan Galeri Seni Derby
- White Watson
- Geological Curators' Group
- Geological Society of London
- William Cavendish, 6th Duke of Devonshire
- GCG
- Sheffield
- Ashford Black Marble
- List of geoscience organizations
- Harold Robert Steacy
- Fossil
- California Geological Survey
