@misc{indiciae815509fdf7d9,
  title = {Nitrogen, sulfate, chloride, and manganese in ground water in the alluvial deposits of the South Platte River Valley near Greeley, Weld County, Colorado},
  author = {N. G. Gaggiani},
  year = {1984},
  doi = {10.3133/wri844088},
  url = {https://pubs.usgs.gov/publication/wri844088},
  note = {Source identifier: wri844088}
}