@misc{indiciae595d05057637,
  title = {Geology and coal resources of the Axial and Monument Butte quadrangles, Moffat County, Colorado},
  author = {Eugene Thomas Hancock},
  year = {1925},
  doi = {10.3133/b757},
  url = {https://pubs.usgs.gov/publication/b757},
  note = {Source identifier: b757}
}