@article{217540,
      note = {Distributed to depository libraries in microfiche.},
      author = {Bliss, James D. and McKelvey, G. E. and Allen, Michael S.},
      url = {http://library.usi.edu/record/217540},
      title = {Application of grade and tonnage deposit models the search  for ore deposits possibly amenable to small-scale mining /  [microform] :},
      publisher = {U.S. Geological Survey,},
      recid = {217540},
      pages = {24 leaves :},
      address = {[Menlo Park, CA] :},
      year = {1990},
}