@misc{indiciae35509c371379,
  title = {Descriptive and grade-tonnage models of volcanogenic manganese deposits in oceanic environments; a modification},
  author = {Dan L. Mosier and Norman J. Page},
  year = {1988},
  doi = {10.3133/b1811},
  url = {https://pubs.usgs.gov/publication/b1811},
  note = {Source identifier: b1811}
}