@misc{indiciae8bac57f923ce,
  title = {The impact of human activities on sediments of San Francisco Bay, California: an overview},
  author = {Alexander van Geen and Samuel N. Luoma},
  year = {1999},
  doi = {10.1016/s0304-4203(98)00080-2},
  url = {https://pubs.usgs.gov/publication/70174590},
  note = {Source identifier: 70174590}
}