@misc{indiciae13e231be9c6d,
  title = {Land use and land cover associated maps for Gadsden, Alabama},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1977},
  doi = {10.3133/ofr7745},
  url = {https://pubs.usgs.gov/publication/ofr7745},
  note = {Source identifier: ofr7745}
}