@misc{indiciaee5dcfd23bcd2,
  title = {Observations on unmeasured rivers},
  author = {Luna Bergere Leopold and Herbert E. Skibitzke},
  year = {1967},
  doi = {10.2307/520892},
  url = {https://pubs.usgs.gov/publication/70185811},
  note = {Source identifier: 70185811}
}