@misc{indiciaebe265f7e714b,
  title = {Preliminary report on the bedded manganese of the Lake Mead region, Nevada and Arizona},
  author = {V.E. McKelvey and J. H. Wiese and V. H. Johnson},
  year = {1949},
  doi = {10.3133/b948d},
  url = {https://pubs.usgs.gov/publication/b948D},
  note = {Source identifier: b948D}
}