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1 Title by Sohn, I. G. (Israel Gregory), (Born 1911) 

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  1. Paraparchites mazonensis n. sp. (Ostracoda) from Middle Pennsylvanian ironstone concretions of Illinois / I. G. Sohn --.
    By: Sohn, I. G. - Field Museum of Natural History.
    Publication info: Chicago :Field Museum of Natural History,1977.
    Contributed by: University of Illinois Urbana Champaign
    View record   View book
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