@misc{indiciaeb5ebcf4e5e8d,
  title = {Spirit leveling in South Carolina, 1896-1938. Part 1, Northern South Carolina},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1939},
  doi = {10.3133/b890a},
  url = {https://pubs.usgs.gov/publication/b890A},
  note = {Source identifier: b890A}
}