@misc{indiciae656630a4c9d4,
  title = {Low-rank coal formation in Poland and the United States: I. Zitau Basin, Poland},
  author = {J.R. Kasinski and R. B. Finkelman and M. Piwocki and R.W. Stanton and Peter D. Warwick},
  year = {1997},
  url = {https://pubs.usgs.gov/publication/70195526},
  note = {Source identifier: 70195526}
}