@article{024-001-03556-1,
      author = {Smith, Richard A., and Alexander, Richard B. and Wolman,  M. Gordon,},
      url = {http://library.usi.edu/record/225506},
      title = {Analysis and interpretation of water-quality trends in  major U.S. rivers, 1974-81 /},
      publisher = {GPO,},
      number = {024-001-03556-1},
      recid = {225506},
      pages = {iv, 25 p. :},
      address = {Washington, DC :},
      year = {1987},
}