@misc{indiciae27e79515d064,
  title = {Experiments D001, D002, and D006: Basic object, nearby object, and surface photography},
  author = {Geltmacher, H. E.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720003235},
  note = {Source identifier: 19720003235}
}