@misc{indiciae02bdb3d274e5,
  title = {Data compilation, synthesis, and calculations used for organic-carbon storage and inventory estimates for mineral soils of the Mississippi River Basin},
  author = {Gary R. Buell and Helaine W. Markewich},
  year = {2004},
  doi = {10.3133/pp1686a},
  url = {https://pubs.usgs.gov/publication/pp1686A},
  note = {Source identifier: pp1686A}
}