@misc{indiciaef09acd32a18f,
  title = {Geophysical and lithologic logs of 1977 coal drilling in the Fort Union Formation, Carbon and Sweetwater Counties, Wyoming},
  author = {Robert D. Hettinger and Robert Brown},
  year = {1979},
  doi = {10.3133/ofr79326},
  url = {https://pubs.usgs.gov/publication/ofr79326},
  note = {Source identifier: ofr79326}
}