@article{160156,
      note = {"U.S. Department of the Interior, U.S. Geological  Survey"--T.p. verso.},
      author = {Piper, David Z. and Medrano, M. D.},
      url = {http://library.usi.edu/record/160156},
      title = {Geochemistry of the Phosphoria Formation at Montpelier  Canyon, Idaho : environment of deposition /},
      publisher = {U.S. G.P.O. ;},
      recid = {160156},
      pages = {iii, 28 p. :},
      address = {Washington, D.C. :},
      year = {1994},
}