@misc{indiciae2b1684e4a5eb,
  title = {Hydrogeology and geochemistry of acid mine drainage in ground water in the vicinity of Penn Mine and Camanche Reservoir, Calaveras County, California: First-year summary},
  author = {S. N. Hamlin and Charles N. Alpers},
  year = {1995},
  doi = {10.3133/wri944040},
  url = {https://pubs.usgs.gov/publication/wri944040},
  note = {Source identifier: wri944040}
}