@misc{indiciae0784b71bb05a,
  title = {Contributions to the hydrology of the United States, 1923-1924},
  author = {Nathan Clifford Grover},
  year = {1925},
  doi = {10.3133/wsp520},
  url = {https://pubs.usgs.gov/publication/wsp520},
  note = {Source identifier: wsp520}
}