@misc{indiciaea70a170ba705,
  title = {Longitudinal slope characteristics of rivers of the midcontinent and the Atlantic east gulf slopes},
  author = {C.W. Carlston},
  year = {1969},
  doi = {10.1080/02626666909493751},
  url = {https://pubs.usgs.gov/publication/70207261},
  note = {Source identifier: 70207261}
}