@article{219592,
      recid = {219592},
      author = {Long, H. Keith. and Farrar, Jerry W.},
      title = {Report on the U.S. Geological Survey's evaluation program  for standard reference samples distributed in April 1994  T-129 (trace constituents), M-130 (major constituents),  N-42 (nutrients), P-22 (low ionic strength), and Hg-18  (mercury) / [microform] :},
      publisher = {U.S. Geological Survey,},
      address = {Golden, Colo. :},
      pages = {101 p. :},
      year = {1994},
      note = {Chiefly tables.},
      url = {http://library.usi.edu/record/219592},
}