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  1. By: De Mar, Robert Eugene,
    Publication info: Chicago, Field Museum of Natural History, 1976
    Holding Institution: University Library, University of Illinois Urbana Champaign
  2. By: De Mar, Robert Eugene,
    Publication info: [Chicago], Field Museum of Natural History, 1966
    Holding Institution: University Library, University of Illinois Urbana Champaign
  3. By: De Mar, Robert Eugene,
    Publication info: [Chicago], Field Museum of Natural History, 1966
    Holding Institution: University Library, University of Illinois Urbana Champaign
  4. By: De Mar, Robert Eugene,
    Publication info: [Chicago], Field Museum of Natural History, 1967
    Holding Institution: University Library, University of Illinois Urbana Champaign