@misc{indiciaee843f98986f1,
  title = {Geophysical logs of coal test drill holes in the Grand Mesa coal field, Delta and Mesa Counties, Colorado},
  author = {George P. Eager},
  year = {1978},
  doi = {10.3133/ofr78540},
  url = {https://pubs.usgs.gov/publication/ofr78540},
  note = {Source identifier: ofr78540}
}