@misc{indiciae4bb2b536d972,
  title = {Progress in cartography, EROS program},
  author = {Colvocoresses, A. P. and Mcewen, R. B.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730019566},
  note = {Source identifier: 19730019566}
}