@misc{indiciae8cfa5443cf11,
  title = {Occurrence, distribution, and concentration of hydrocarbons in and near the Shell Valley Aquifer, North Dakota},
  author = {Wayne R. Berkas},
  year = {2000},
  doi = {10.3133/ofr99194},
  url = {https://pubs.usgs.gov/publication/ofr99194},
  note = {Source identifier: ofr99194}
}