@misc{indiciae378b5960a683,
  title = {Hydrogeology and geochemistry of acid mine drainage in ground water in the vicinity of Penn Mine and Camanche Reservoir, Calaveras County, California: Summary report, 1993–95},
  author = {Charles N. Alpers and S. N. Hamlin and M. P. Hunerlach},
  year = {1999},
  doi = {10.3133/wri964287},
  url = {https://pubs.usgs.gov/publication/wri964287},
  note = {Source identifier: wri964287}
}