@misc{indiciae61ca53b11c85,
  title = {Mineral resource potential map of the Rock Pile Mountain Wilderness Study area, Madison County, Missouri},
  author = {Walden P. Pratt and Ralph L. Erickson and Clarence Ellis},
  year = {1982},
  doi = {10.3133/mf1339b},
  url = {https://pubs.usgs.gov/publication/mf1339B},
  note = {Source identifier: mf1339B}
}