@misc{indiciae4024b3827bbc,
  title = {Statistical analysis and areal trends of background concentrations of metals in soils of Clark County, Washington},
  author = {K. C. Ames and D. B. Hawkins},
  year = {1997},
  doi = {10.3133/wri964252},
  url = {https://pubs.usgs.gov/publication/wri964252},
  note = {Source identifier: wri964252}
}