@misc{indiciae1a08c6645ed0,
  title = {Geochemical Survey of Missouri: Plans and progress for third six-month period (July-December 1970)},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1970},
  doi = {10.3133/ofr72400},
  url = {https://pubs.usgs.gov/publication/ofr72400},
  note = {Source identifier: ofr72400}
}