@misc{indiciae195b72aa7b56,
  title = {Ground-water quality near a sewage-sludge recycling site and a landfill near Denver, Colorado},
  author = {Stanley G. Robson},
  year = {1977},
  doi = {10.3133/wri76132},
  url = {https://pubs.usgs.gov/publication/wri76132},
  note = {Source identifier: wri76132}
}