@misc{indiciae1e9e0cb89e77,
  title = {Ground support for lunar mapping mission},
  author = {Beccasio, A. and Pels, G. F. and Sigler, H.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710042524},
  note = {Source identifier: 19710042524}
}