@misc{indiciae508ba1575a79,
  title = {Ground-water flow, geochemistry, and effects of agricultural practices on nitrogen transport at study sites in the Piedmont and Coastal Plain physiographic provinces, Patuxent River Basin, Maryland},
  author = {Randolph E. McFarland},
  year = {1995},
  doi = {10.3133/ofr94507},
  url = {https://pubs.usgs.gov/publication/ofr94507},
  note = {Source identifier: ofr94507}
}