@misc{indiciaede32a57f2a0f,
  title = {Toxicity of selected elements to plants, animals, and man; an outline},
  author = {L. P. Gough and Hansford Threlkeld Shacklette},
  year = {1976},
  doi = {10.3133/ofr76746},
  url = {https://pubs.usgs.gov/publication/ofr76746},
  note = {Source identifier: ofr76746}
}