Now available on BHL: Full Text Search! Learn more.
Sort By:
  1. By: Slocom, Arthur Ware, - Farrington, Oliver C. (Oliver Cummings), - Field Museum of Natural History.
    Publication info: Chicago :Field Museum of Natural History ,1913.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Fayette County  Iowa  Ordovician  Paleontology  Trilobites