@misc{indiciae7575e5037d87,
  title = {South Dakota mica deposits},
  author = {J.W. Adams and L.C. Pray and L. R. Page and J.J. Morton and M.P. Erickson and T. A. Steven and K.F. Stopper},
  year = {1945},
  doi = {10.3133/ofr4587},
  url = {https://pubs.usgs.gov/publication/ofr4587},
  note = {Source identifier: ofr4587}
}