@misc{indiciaeef37fb587ff3,
  title = {A ground-water reconnaissance of the Republic of Ghana, with a description of geohydrologic provinces},
  author = {H.E. Gill},
  year = {1969},
  doi = {10.3133/wsp1757k},
  url = {https://pubs.usgs.gov/publication/wsp1757K},
  note = {Source identifier: wsp1757K}
}