@misc{indiciae256ad76eb5d2,
  title = {Age relations between soils and geology in the coastal plain of Maryland and Virginia},
  author = {Helaine W. Markewich and M.J. Pavich and M.J. Mausbach and R.L. Hall and R. G. Johnson and P.P. Hearn},
  year = {1987},
  doi = {10.3133/b1589a},
  url = {https://pubs.usgs.gov/publication/b1589A},
  note = {Source identifier: b1589A}
}