@misc{indiciae62cc86cd74ce,
  title = {Elemental composition of selected native plants and associated soils from major vegetation-type areas in Missouri},
  author = {J. A. Erdman and H.T. Shacklette and J. R. Keith},
  year = {1976},
  doi = {10.3133/pp954c},
  url = {https://pubs.usgs.gov/publication/pp954C},
  note = {Source identifier: pp954C}
}