@misc{indiciae356556f39705,
  title = {4 NCIC Data Acquisition Guide},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/70039436},
  url = {https://pubs.usgs.gov/publication/70039436},
  note = {Source identifier: 70039436}
}