@misc{indiciaec3503693728e,
  title = {Real-estate lakes},
  author = {David A. Rickert and Andrew Maute Spieker},
  year = {1971},
  doi = {10.3133/cir601g},
  url = {https://pubs.usgs.gov/publication/cir601G},
  note = {Source identifier: cir601G}
}