@misc{indiciae88b5ddc333e2,
  title = {Progress report on study of the geohydrology of the Mississippi Embayment area},
  author = {E. M. Cushing and P. R. Speer and M.E. Schroeder},
  year = {1960},
  doi = {10.3133/ofr6034},
  url = {https://pubs.usgs.gov/publication/ofr6034},
  note = {Source identifier: ofr6034}
}