@misc{indiciae712eebebc5b2,
  title = {The planet Venus in four map sheets; 1, Radar image map of Venus; 2, Radar image and shaded relief map of Venus; 3, Altimetric radar image map of Venus; 4, Topographic map of Venus},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1997},
  doi = {10.3133/i2444},
  url = {https://pubs.usgs.gov/publication/i2444},
  note = {Source identifier: i2444}
}