@misc{indiciae1821df7b17b6,
  title = {The photogrammetric approach to the gridding of space photographs},
  author = {Glenn N. Smith},
  year = {1969},
  doi = {10.3133/ofr69261},
  url = {https://pubs.usgs.gov/publication/ofr69261},
  note = {Source identifier: ofr69261}
}