@misc{indiciae1e2a14026e4b,
  title = {Determination of total mercury in biological and geological samples},
  author = {James G. Crock},
  year = {2005},
  doi = {10.3133/ofr20051030},
  url = {https://pubs.usgs.gov/publication/ofr20051030},
  note = {Source identifier: ofr20051030}
}