@article{197284,
      note = {Distributed to depository libraries in microfiche.},
      author = {Schumacher, John G.},
      url = {http://library.usi.edu/record/197284},
      title = {Geochemistry and migration of contaminants at the Weldon  Spring chemical plant site, St. Charles County,  Missouri--1989-91 [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey ;},
      recid = {197284},
      pages = {vii, 102 leaves :},
      address = {Rolla, Mo. :},
      year = {1993},
}