@misc{indiciae56e3798994cb,
  title = {Sample size and meaningful gold analysis},
  author = {H.E. Clifton and R. E. Hunter and F. J. Swanson and R. L. Phillips},
  year = {1969},
  doi = {10.3133/pp625c},
  url = {https://pubs.usgs.gov/publication/pp625C},
  note = {Source identifier: pp625C}
}