@misc{indiciaeb2e16a6ad46c,
  title = {Preliminary geologic map of the Hommel quadrangle of the Moon},
  author = {Thomas A. Mutch and Ronald Stephen Saunders},
  year = {1969},
  doi = {10.3133/ofr69179},
  url = {https://pubs.usgs.gov/publication/ofr69179},
  note = {Source identifier: ofr69179}
}