@misc{indiciaef6811ddde43b,
  title = {Quality of water in the Susquehanna River drainage basin, with an introductory chapter on physiographic features},
  author = {Marshall O. Leighton and George Buell Hollister},
  year = {1904},
  doi = {10.3133/wsp108},
  url = {https://pubs.usgs.gov/publication/wsp108},
  note = {Source identifier: wsp108}
}