@misc{indiciae9ff34573b583,
  title = {Interagency report; Astrogeology 59, Geologic maps and terrain analysis data for Viking Mars 1975 landing sites considered in December 1972},
  author = {Harold Masursky and Mary H. Strobell},
  year = {1976},
  doi = {10.3133/ofr76431},
  url = {https://pubs.usgs.gov/publication/ofr76431},
  note = {Source identifier: ofr76431}
}