@misc{indiciae5e83225facce,
  title = {Geologic map of the Sulphur asphalt area, Murray County, Oklahoma},
  author = {Joseph M. Gorman and G.M. Flint and Cheryl E. Decker and W.E. Ham},
  year = {1944},
  doi = {10.3133/om22},
  url = {https://pubs.usgs.gov/publication/om22},
  note = {Source identifier: om22}
}