@misc{indiciaea33169ffa621,
  title = {Distribution of mercury in surface sediments in San Francisco Bay estuary, California},
  author = {D. S. McCulloch and T. J. Conomos and D. H. Peterson and K. Leong},
  year = {1971},
  doi = {10.3133/ofr71192},
  url = {https://pubs.usgs.gov/publication/ofr71192},
  note = {Source identifier: ofr71192}
}