@misc{indiciaedd90b8a036d1,
  title = {Soil association map of Knox County, Tennessee},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/i767h},
  url = {https://pubs.usgs.gov/publication/i767H},
  note = {Source identifier: i767H}
}