@misc{indiciae5b2fc0ec8829,
  title = {DEPTH; a system for the display of elementary petroleum themes},
  author = {P.A. Fulton and R.W. Coffin and M.S. Kutsko},
  year = {1983},
  doi = {10.3133/pp1297},
  url = {https://pubs.usgs.gov/publication/pp1297},
  note = {Source identifier: pp1297}
}