@misc{indiciae8eaaacef3393,
  title = {Manual for leveling at gaging stations in North Carolina},
  author = {N.O. Thomas and N.M. Jackson},
  year = {1981},
  doi = {10.3133/ofr811104},
  url = {https://pubs.usgs.gov/publication/ofr811104},
  note = {Source identifier: ofr811104}
}