@article{20957,
      recid = {20957},
      author = {Shulters, M. V., and Clifton, Daphne G.},
      title = {Mount St. Helens volcanic-ash fall in the Bull Run  watershed, Oregon, March-June 1980 : hydrologic effects of  the eruptions of Mount St. Helens, Washington, 1980 /},
      publisher = {U.S. Dept. of the Interior, Geological Survey,},
      address = {[Alexandria, VA] :},
      pages = {v, A15 p. :},
      year = {1980},
      url = {http://library.usi.edu/record/20957},
}