@misc{indiciaeeb4e1d3af7fa,
  title = {Map of the Berea sand of southern West Virginia},
  author = {C.W. Merrels},
  year = {1946},
  doi = {10.3133/om59},
  url = {https://pubs.usgs.gov/publication/om59},
  note = {Source identifier: om59}
}