@misc{indiciae181db3e4f3f1,
  title = {Gold, silver, and other resources in the ash of incinerated sewage sludge at Palo Alto, California; a preliminary report},
  author = {Robert A. Gulbrandsen and Norma Rait and D.J. Krier and P. A. Baedecker and Anne Childress},
  year = {1978},
  doi = {10.3133/cir784},
  url = {https://pubs.usgs.gov/publication/cir784},
  note = {Source identifier: cir784}
}