@misc{indiciae7a5057b19135,
  title = {Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin},
  author = {Sandra G. Neuzil and Frank T. Dulong and C. Blaine Cecil and Nick Fedorko and John J. Renton and D.K. Bhumbla},
  year = {2007},
  doi = {10.3133/ofr20071090},
  url = {https://pubs.usgs.gov/publication/ofr20071090},
  note = {Source identifier: ofr20071090}
}