@misc{indiciaeabe01e0c5300,
  title = {Results of standard coal quality analysis for COALREAP drilling from January 1988 to February 1989; JK-series boreholes, Jherruck area of the Sonda coal field, Sindh Province, Pakistan},
  author = {J. R. SanFilipo and A.H. Chandio and S.A. Khan and R.A. Khan and C.L. Oman},
  year = {1993},
  doi = {10.3133/ofr93589},
  url = {https://pubs.usgs.gov/publication/ofr93589},
  note = {Source identifier: ofr93589}
}