@misc{indiciaee6aa32c81d80,
  title = {Geology of the coal and petroleum deposits in the Ordos basin, China},
  author = {K. Y. Lee},
  year = {1986},
  doi = {10.3133/ofr86278},
  url = {https://pubs.usgs.gov/publication/ofr86278},
  note = {Source identifier: ofr86278}
}