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4 Titles tagged with "Grundy County"
  1. Pennsylvanian invertebrates of the Mazon Creek area, Illinois. Insects / Eugene S. Richardson, Jr., Curator of Fossil Invertebrates.
    Publication Info: [Chicago]:Chicago Natural History Museum,1956.
    Contributed By: University of Illinois Urbana Champaign
    Tags: Grundy County  Illinois  Invertebrates, Fossil  Paleontology  Pennsylvanian  Will County  
  2. Pennsylvanian invertebrates of the Mazon Creek area, Illinois. Trilobitomorpha, Arthropleurida / Eugene S. Richardson, Jr., Curator of Fossil Invertebrates.
    Publication Info: [Chicago]:Chicago Natural History Museum,1956.
    Contributed By: University of Illinois Urbana Champaign
    Tags: Grundy County  Illinois  Invertebrates, Fossil  Paleontology  Pennsylvanian  Will County  
  3. Pennsylvanian invertebrates of the Mazon Creek area, Illinois / Eugene S. Richardson, Jr. --
    Publication Info: [Chicago] :Chicago Natural History Museum Press,1956.
    Contributed By: University of Illinois Urbana Champaign
    Tags: Grundy County  Illinois  Invertebrates, Fossil  Paleontology  Pennsylvanian  Will County  
  4. Pennsylvanian invertebrates of the Mazon Creek area, Illinois. Marine fauna / Eugene S. Richardson, Jr., Curator of Fossil Invertebrates.
    Publication Info: [Chicago]:Chicago Natural History Museum,1956.
    Contributed By: University of Illinois Urbana Champaign
    Tags: Amphineura, Fossil  Grundy County  Illinois  Invertebrates, Fossil  Paleontology  Pennsylvanian  Will County