@article{13604,
      author = {Voskuil, Walter H.},
      url = {http://library.usi.edu/record/13604},
      title = {A geography of minerals},
      publisher = {W. C. Brown Co.},
      recid = {13604},
      pages = {ix, 117 p.},
      address = {Dubuque, Iowa,},
      year = {1969},
}