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  1. By: Kjellesvig-Waering, Erik N.
    Publication info: [Chicago], Chicago Natural History Museum, 1961
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Devonian  Eurypterida  Lucas County  Ohio  Paleontology
  2. By: Denison, Robert H. (Robert Howland), - Ross, Lillian A.
    Publication info: [Chicago], Chicago Natural History Museum Press, 1960
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Devonian  Fishes, Fossil  Lucas County  Ohio  Paleontology
  3. By: Carman, J. Ernest (Joel Ernest),
    Publication info: [Chicago], Chicago Natural History Museum, 1960
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Devonian  Geology  Geology, Stratigraphic  Lucas County  Ohio