@misc{indiciae24ce891f472c,
  title = {Chemical and biological status of lakes and streams in the upper midwest: assessment of acidic deposition effects},
  author = {J.G. Wiener and J.M. Eilers},
  year = {1987},
  doi = {10.1080/07438148709354792},
  url = {https://pubs.usgs.gov/publication/70007043},
  note = {Source identifier: 70007043}
}