@misc{indiciaeb3768fe380ed,
  title = {National geodetic satellite program, part 1},
  author = {Anderle, R. and Brown, D. C. and Cyran, E. and Eckhardt, D. H. and Dudley, G. and Googe, W. D. and Hadgigeorge, G. and Huber, D. and Iliff, R. L. and Mason, N.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780003605},
  note = {Source identifier: 19780003605}
}