@misc{indiciae495d87d7d1c7,
  title = {Controlled photomosaic of the Njord Quadrangle of Callisto},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1990},
  doi = {10.3133/i2076},
  url = {https://pubs.usgs.gov/publication/i2076},
  note = {Source identifier: i2076}
}