@article{196623,
      note = {Distributed to depository libraries in microfiche.},
      author = {Wilkison, Donald H. and Maley, Randall D.},
      url = {http://library.usi.edu/record/196623},
      title = {Occurrence of herbicides, nitrite plus nitrate, and  selected trace elements in ground water from northwestern  and northeastern Missouri, July 1991 and 1992 [microform]  /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey ;},
      recid = {196623},
      pages = {v, 64 p. :},
      address = {Rolla, Mo. :},
      year = {1994},
}