@misc{indiciae9271ae9bf7b4,
  title = {Triangulation and primary traverse, 1916-1918. Triangulation in Idaho and Montana, 1914-1916},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1923},
  doi = {10.3133/b709d},
  url = {https://pubs.usgs.gov/publication/b709D},
  note = {Source identifier: b709D}
}