@article{61557,
      author = {Austin, George S.},
      url = {http://library.usi.edu/record/61557},
      title = {Directory of clay and shale producers and ceramic plants  in Indiana.},
      publisher = {Indiana Geological Survey,},
      recid = {61557},
      pages = {28 ℓ.},
      address = {[Bloomington, Ind.]},
      year = {1972},
}