@article{219975,
      note = {Shipping list no.: 97-0317-M.},
      author = {Johnson, Craig A. and Zielinski, Robert A. and  Asher-Bolinder, Sigrid.},
      url = {http://library.usi.edu/record/219975},
      title = {Nitrogen isotopes in nitrate from surface water and  shallow groundwater at Sixmile Creek, southeastern Colorado  [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      recid = {219975},
      pages = {1 v. :},
      address = {[Reston, Va.] :},
      year = {1995},
}