@misc{indiciae771c0027e303,
  title = {The non-participation of organic sulphur in acid mine drainage generation},
  author = {D.J. Casagrande and R. B. Finkelman and F.T. Caruccio},
  year = {1989},
  doi = {10.1007/bf01758669},
  url = {https://pubs.usgs.gov/publication/70015501},
  note = {Source identifier: 70015501}
}