@misc{indiciaeef570a150771,
  title = {Major geohydrologic units in and adjacent to the Ozark Plateaus province, Missouri, Arkansas, Kansas and Oklahoma — St. Francois aquifer},
  author = {Jeffrey L. Imes},
  year = {1990},
  doi = {10.3133/ha711c},
  url = {https://pubs.usgs.gov/publication/ha711C},
  note = {Source identifier: ha711C}
}