@misc{indiciae3bd6507f63ea,
  title = {Geochemistry and migration of contaminants at the Weldon Spring chemical plant site, St. Charles County, Missouri, 1989-91},
  author = {John G. Schumacher},
  year = {1993},
  doi = {10.3133/ofr93433},
  url = {https://pubs.usgs.gov/publication/ofr93433},
  note = {Source identifier: ofr93433}
}