@misc{indiciaec7514ec0aacb,
  title = {Water-table, surface-drainage, and engineering soils map of the Burrsville area, Delaware},
  author = {Durward H. Boggess and Christian F. Davis and O. J. Coskery},
  year = {1965},
  doi = {10.3133/ha135},
  url = {https://pubs.usgs.gov/publication/ha135},
  note = {Source identifier: ha135}
}