@misc{indiciaeffaf488b7a33,
  title = {Long-term effects of surface coal mining on ground-water levels and quality in two small watersheds in eastern Ohio},
  author = {W. L. Cunningham and R.L. Jones},
  year = {1990},
  doi = {10.3133/wri904136},
  url = {https://pubs.usgs.gov/publication/wri904136},
  note = {Source identifier: wri904136}
}