@misc{indiciae0d416e7f7d56,
  title = {Elemental composition of corn grains, soybean seeds, pasture grasses, and associated soils from selected areas in Missouri},
  author = {J. A. Erdman and H.T. Shacklette and J. R. Keith},
  year = {1976},
  doi = {10.3133/pp954d},
  url = {https://pubs.usgs.gov/publication/pp954D},
  note = {Source identifier: pp954D}
}