@misc{indiciae1ce37b5a664f,
  title = {Dye tracing techniques used to determine ground-water flow in a carbonate aquifer system near Elizabethtown, Kentucky},
  author = {D. S. Mull and J. L. Smoot and T.D. Liebermann},
  year = {1988},
  doi = {10.3133/wri874174},
  url = {https://pubs.usgs.gov/publication/wri874174},
  note = {Source identifier: wri874174}
}