@article{263646,
      note = {Cover title.},
      author = {Cox, Dennis P. and Singer, D. A.},
      url = {http://library.usi.edu/record/263646},
      title = {Descriptive and grade-tonnage models for distal  disseminated Ag- Au deposits a supplement to U.S.  Geological Survey bulletin 1963 / [microform] :},
      publisher = {U.S. Geological Survey,},
      recid = {263646},
      pages = {8 leaves :},
      address = {[Menlo Park, CA] :},
      year = {1990},
}