@misc{indiciae97d64e7c31cb,
  title = {Elements in cottonwood trees as an indicator of ground water contaminated by landfill leachate},
  author = {James A. Erdman and Scott Christenson},
  year = {2007},
  doi = {10.1111/j.1745-6592.2000.tb00258.x},
  url = {https://pubs.usgs.gov/publication/70094988},
  note = {Source identifier: 70094988}
}