@misc{indiciae390ac8ec55ad,
  title = {Occurrence of strontium in the surface and ground waters of Champaign county, Ohio},
  author = {A.J. Feulner and J.H. Hubble},
  year = {1960},
  doi = {10.2113/gsecongeo.55.1.176},
  url = {https://pubs.usgs.gov/publication/70220587},
  note = {Source identifier: 70220587}
}