@misc{indiciaeb0fabd36f7bf,
  title = {Determination of silver in soils, sediments, and rocks by organic-chelate extraction and atomic absorption spectrophotometry},
  author = {T. T. Chao and J.W. Ball and H. M. Nakagawa},
  year = {1971},
  doi = {10.1016/s0003-2670(01)81856-0},
  url = {https://pubs.usgs.gov/publication/70010401},
  note = {Source identifier: 70010401}
}