@misc{indiciae5468146fffa0,
  title = {Water-resources investigations in the United States},
  author = {C. G. Paulsen},
  year = {1950},
  doi = {10.3133/ofr5090},
  url = {https://pubs.usgs.gov/publication/ofr5090},
  note = {Source identifier: ofr5090}
}