@misc{indiciae0b73108538f0,
  title = {Huminite reflectance measurements of Paleocene and Upper Cretaceous coals from borehole cuttings, Zavala and Dimmit counties, South Texas},
  author = {Paul C. Hackley and Robert W. Hook and Peter D. Warwick},
  year = {2005},
  doi = {10.3133/ofr20051144},
  url = {https://pubs.usgs.gov/publication/ofr20051144},
  note = {Source identifier: ofr20051144}
}