@misc{indiciae52dcfb676aed,
  title = {Niobium (columbium) and titanium at Magnet Cove and Potash Sulphur Springs, Arkansas},
  author = {Verne Charles Fryklund and R. S. Harner and E.P. Kaiser},
  year = {1954},
  doi = {10.3133/b1015b},
  url = {https://pubs.usgs.gov/publication/b1015B},
  note = {Source identifier: b1015B}
}