@misc{indiciae132cdf8a3021,
  title = {Ground-water-quality data for the land application of sewage sludge at a site near Denver, Colorado, 1988-93},
  author = {K.J. Lull and N. G. Gaggiani},
  year = {1996},
  doi = {10.3133/ofr96410},
  url = {https://pubs.usgs.gov/publication/ofr96410},
  note = {Source identifier: ofr96410}
}