@misc{indiciae2347e6fdf13f,
  title = {Contributions to the hydrology of the United States, 1928},
  author = {Nathan Clifford Grover},
  year = {1929},
  doi = {10.3133/wsp597},
  url = {https://pubs.usgs.gov/publication/wsp597},
  note = {Source identifier: wsp597}
}