@misc{indiciae8804854bd76f,
  title = {Stratified deposits of the oxides and carbonates of manganese},
  author = {D. F. Hewett},
  year = {1966},
  doi = {10.2113/gsecongeo.61.3.431},
  url = {https://pubs.usgs.gov/publication/70221231},
  note = {Source identifier: 70221231}
}