@article{216590,
      recid = {216590},
      author = {Fitterman, David V.},
      title = {Analysis of errors in HEM bird calibration [microform] /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey :},
      address = {[Denver, Colo.?] :},
      pages = {28 leaves :},
      year = {1997},
      note = {Cover title.},
      url = {http://library.usi.edu/record/216590},
}