@misc{indiciaef8dc4fd96349,
  title = {Color image maps from black-and-white photographs},
  author = {Sheila Martin},
  year = {1978},
  doi = {10.3133/ofr79680},
  url = {https://pubs.usgs.gov/publication/ofr79680},
  note = {Source identifier: ofr79680}
}