@misc{indiciae11d80fe282f7,
  title = {Triangulation and primary traverse, 1913-1915; R.B. Marshall, Chief Geographer. Primary traverse in Louisiana and Mississippi, 1913-1915},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1916},
  doi = {10.3133/b644i},
  url = {https://pubs.usgs.gov/publication/b644I},
  note = {Source identifier: b644I}
}