@misc{indiciaedec9f7586cea,
  title = {Studying the Earth from space},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1977},
  doi = {10.3133/7000073},
  url = {https://pubs.usgs.gov/publication/7000073},
  note = {Source identifier: 7000073}
}