@misc{indiciaeaa42dcfa5193,
  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 = {1997},
  doi = {10.3133/wsp2449},
  url = {https://pubs.usgs.gov/publication/wsp2449},
  note = {Source identifier: wsp2449}
}