@article{198824,
      note = {Cover title.},
      author = {Orris, G. J. and Bliss, James D.},
      url = {http://library.usi.edu/record/198824},
      title = {Industrial minerals deposit models grade and tonnage  models / [microform] :},
      publisher = {U.S. Geological Survey ;},
      recid = {198824},
      pages = {ii, 84 p. :},
      address = {[Menlo Park, CA] :},
      year = {1992},
}