@misc{indiciae4ff581e707b0,
  title = {Determination of gold in geologic materials by solvent extraction and atomic-absorption spectrometry},
  author = {Claude Huffman and J.D. Mensik and L.B. Riley},
  year = {1967},
  doi = {10.3133/cir544},
  url = {https://pubs.usgs.gov/publication/cir544},
  note = {Source identifier: cir544}
}