@misc{indiciae0af639532420,
  title = {National geodetic satellite program, part 1},
  author = {Esposito, P. B. and Mottinger, N. A. and Moyer, T. D. and Trask, D. W.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780003606},
  note = {Source identifier: 19780003606}
}