@misc{indiciaefc82040f7149,
  title = {A preliminary evaluation of hydrologic conditions of the Lakeland Ridge area of Polk County, Florida},
  author = {Alton F. Robertson},
  year = {1971},
  doi = {10.3133/ofr71241},
  url = {https://pubs.usgs.gov/publication/ofr71241},
  note = {Source identifier: ofr71241}
}