@misc{indiciae48c747f49d2e,
  title = {Potentiometric Surface of the Ozark Aquifer near Springfield, Missouri, 2006-07},
  author = {Joseph M. Richards and Douglas N. Mugel},
  year = {2008},
  doi = {10.3133/sim3003},
  url = {https://pubs.usgs.gov/publication/sim3003},
  note = {Source identifier: sim3003}
}