@misc{indiciaeb572ce2a78e4,
  title = {Astrogeological studies, annual progress report, July 1, 1965, to July 1, 1966},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1966},
  doi = {10.3133/ofr68297},
  url = {https://pubs.usgs.gov/publication/ofr68297},
  note = {Source identifier: ofr68297}
}