@misc{indiciaefc835c2e28d8,
  title = {Geophysical logs of coal test drill holes in the Grand Mesa coal field, Delta County, Colorado},
  author = {George P. Eager},
  year = {1979},
  doi = {10.3133/ofr79327},
  url = {https://pubs.usgs.gov/publication/ofr79327},
  note = {Source identifier: ofr79327}
}