@misc{indiciae369ef1e426be,
  title = {Preliminary results of prospecting of the "leached" zone over phosphate deposits in NW 1/4 of sec. 9, T. 31 S., R. 25 E., Polk County, Florida},
  author = {Robert H. Stewart},
  year = {1949},
  doi = {10.3133/tei100},
  url = {https://pubs.usgs.gov/publication/tei100},
  note = {Source identifier: tei100}
}