@article{227203,
      recid = {227203},
      author = {Froelich, A. J. and Hack, John T. and Otton, E. G.},
      title = {Geologic and hydrologic map reports for land-use planning  in the Baltimore-Washington urban area /},
      publisher = {U.S. Geological Survey,},
      address = {Arlington, VA :},
      pages = {iv, 26 p. :},
      year = {1980},
      url = {http://library.usi.edu/record/227203},
}