@misc{indiciaea2b63ac52ef6,
  title = {Amazon River investigations, reconnaissance measurements of July 1963},
  author = {Roy Edwin Oltman and H. O’R. Sternberg and F.C. Ames and L.C. Davis},
  year = {1964},
  doi = {10.3133/cir486},
  url = {https://pubs.usgs.gov/publication/cir486},
  note = {Source identifier: cir486}
}