@misc{indiciae1eb2a936dbb1,
  title = {Surficial materials map of the Springfield 1 degree by 2 degrees Quadrangle, Missouri},
  author = {J.W. Whitfield},
  year = {1986},
  doi = {10.3133/mf1830b},
  url = {https://pubs.usgs.gov/publication/mf1830B},
  note = {Source identifier: mf1830B}
}