@misc{indiciae2b9087c525e2,
  title = {Geologic maps of early Apollo landing sites of set C},
  author = {N.J. Trask},
  year = {1969},
  doi = {10.3133/ofr70327},
  url = {https://pubs.usgs.gov/publication/ofr70327},
  note = {Source identifier: ofr70327}
}