@misc{indiciaee5db34ea92c5,
  title = {Summary geochemical maps of the Joplin 1° x 2° quadrangle, Kansas and Missouri},
  author = {R. L. Erickson and E. L. Mosier and H. W. Folger and J. H. Bullock and Pieter Berendsen and Mary Daly},
  year = {1990},
  doi = {10.3133/mf2125a},
  url = {https://pubs.usgs.gov/publication/mf2125A},
  note = {Source identifier: mf2125A}
}