@article{233466,
      note = {Distributed to some depository libraries in microfiche.},
      author = {Crovelli, Robert A.},
      url = {http://library.usi.edu/record/233466},
      title = {Probabilistic method for subdividing petroleum resources  into depth slices /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,},
      recid = {233466},
      pages = {9 leaves :},
      address = {Denver, Colo. :},
      year = {1999},
}