@misc{indiciaec346f685af10,
  title = {Geochemical Survey of Missouri: Plans and progress for second six-month period (January-June 1970)},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1970},
  doi = {10.3133/ofr72399},
  url = {https://pubs.usgs.gov/publication/ofr72399},
  note = {Source identifier: ofr72399}
}