@misc{indiciaedf38c64a1785,
  title = {Summary geochemical and generalized geologic maps of the Springfield 1° x 2° quadrangle and adjacent area, Missouri},
  author = {R. L. Erickson and M. S. Erickson and E. L. Mosier and B. Chazin},
  year = {1985},
  doi = {10.3133/mf1830a},
  url = {https://pubs.usgs.gov/publication/mf1830A},
  note = {Source identifier: mf1830A}
}