@article{191236,
      recid = {191236},
      author = {McFarland, E. Randolph.},
      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 /},
      publisher = {U.S. Geological Survey,},
      address = {Washington :},
      pages = {v, 72 p. :},
      year = {1996},
      note = {"Prepared in cooperation with the Maryland Department of  the Environment."},
      url = {http://library.usi.edu/record/191236},
}