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  1. New information on the Holocystites fauna (Diploporita) of the Middle Silurian of Wisconsin, Illinois, and Indiana /
    By: Frest, Terrence J. - Mikulic, Donald G. - Paul, C. R. C.
    Publication info: Chicago :Field Museum of Natural History,1977.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Holocystites  Middle west  Paleontology  Silurian  
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