@misc{indiciae7f81dc74d1a6,
  title = {Geochemistry of bed and suspended sediment in the Mississippi river system: Provenance versus weathering and winnowing},
  author = {D.Z. Piper and S. Ludington and J. S. Duval and Howard E. Taylor},
  year = {2006},
  doi = {10.1016/j.scitotenv.2005.05.041},
  url = {https://pubs.usgs.gov/publication/70030701},
  note = {Source identifier: 70030701}
}