@misc{indiciae62c4e7cffb6c,
  title = {Ball clay and bentonite deposits of the central and western Gulf of Mexico Coastal Plain, United States},
  author = {John W. Hosterman},
  year = {1984},
  doi = {10.3133/b1558c},
  url = {https://pubs.usgs.gov/publication/b1558C},
  note = {Source identifier: b1558C}
}