@misc{indiciaed94cdd00522e,
  title = {Federal coal resource occurrence and federal coal development potential maps of the Stilger East quadrangle, Muskogee and Haskell Counties, Oklahoma},
  author = {Bruce T. Brady},
  year = {1979},
  doi = {10.3133/ofr79307},
  url = {https://pubs.usgs.gov/publication/ofr79307},
  note = {Source identifier: ofr79307}
}