@misc{indiciae82008f3bc021,
  title = {Reconnaissance of sedimentation in the Rio Pilcomayo Basin, May 1975, Argentina, Bolivia, and Paraguay},
  author = {John R. Ritter},
  year = {1977},
  doi = {10.3133/ofr77327},
  url = {https://pubs.usgs.gov/publication/ofr77327},
  note = {Source identifier: ofr77327}
}