@misc{indiciaeaeda809675ab,
  title = {Clays. Lime and magnesite. Gypsum and plasters. Glass sand etc.},
  author = {C.A. Fisher},
  year = {1908},
  doi = {10.3133/b340i},
  url = {https://pubs.usgs.gov/publication/b340I},
  note = {Source identifier: b340I}
}