@misc{indiciae14bace9efc3e,
  title = {An overview of geologic mapping needs in the United States},
  author = {P. D. Rowley and D. M. Miller and F. K. Miller},
  year = {1986},
  doi = {10.3133/ofr86572},
  url = {https://pubs.usgs.gov/publication/ofr86572},
  note = {Source identifier: ofr86572}
}