@misc{indiciae5cc47bad451f,
  title = {Organic petrology of subbituminous carbonaceous shale samples from Chalāw, Kabul Province, Afghanistan: Considerations for paleoenvironment and energy resource potential},
  author = {Paul C. Hackley and John Sanfilipo and Gul Pacha Azizi and Philip A. Davis and Scott W. Starratt},
  year = {2010},
  doi = {10.1016/j.coal.2009.12.007},
  url = {https://pubs.usgs.gov/publication/70236411},
  note = {Source identifier: 70236411}
}