@misc{indiciae36d7ee18229e,
  title = {Summary of lunar stratigraphy - telescopic observations},
  author = {D.E. Wilhelms},
  year = {1970},
  doi = {10.3133/pp599f},
  url = {https://pubs.usgs.gov/publication/pp599F},
  note = {Source identifier: pp599F}
}