@misc{indiciaedd1a01005a20,
  title = {Structural materials. Cement and concrete materials. Clays. Gypsum and plasters. Line and magnesite. Glass, sand, etc. Abrasives},
  author = {Charles Butts and Thomas Nelson Dale and George B. Richardson and Eugene Wesley Shaw and Alexander Deussen and Ernest F. Burchard},
  year = {1911},
  doi = {10.3133/b470g},
  url = {https://pubs.usgs.gov/publication/b470G},
  note = {Source identifier: b470G}
}