@article{131070,
      note = {20 transparencies in pocket.},
      author = {Williamson, Alex K. and Prudic, David E. and Swain,  Lindsay A.},
      url = {http://library.usi.edu/record/131070},
      title = {Ground-water flow in the Central Valley, California /},
      publisher = {U.S. G.P.O.,},
      recid = {131070},
      pages = {vii, 127 p. :},
      address = {Washington :},
      year = {1989},
}