@misc{indiciae293f00bb6891,
  title = {The stratigraphy and geometry of the Lakhra Formation in the Lakhra coal field area and implications for the coal resource potential north of Lakhra, Sind Province, Pakistan; a progress report},
  author = {Christopher Wnuk and Mohammad Fariduddin and S.F. Fatmi and J.R. SanFilipo},
  year = {1991},
  doi = {10.3133/ofr919},
  url = {https://pubs.usgs.gov/publication/ofr919},
  note = {Source identifier: ofr919}
}