@misc{indiciaec1de957623c8,
  title = {Man and Metals.},
  author = {W Hough},
  year = {1916},
  doi = {10.1073/pnas.2.3.123},
  url = {https://pubmed.ncbi.nlm.nih.gov/16576124/},
  note = {Source identifier: 16576124}
}