@misc{indiciae01333666ecb4,
  title = {Investigations of the characteristics, origin, and residence time of the upland residual mantle of the Piedmont of Fairfax County, Virginia},
  author = {M.J. Pavich and G. W. Leo and S. F. Obermeier and J.R. Estabrook},
  year = {1989},
  doi = {10.3133/pp1352},
  url = {https://pubs.usgs.gov/publication/pp1352},
  note = {Source identifier: pp1352}
}