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  1. A synopsis of American fossil Bryozoa, including bibliography and synonymy / by John M. Nickles and Ray S. Bassler.
    By: Nickles, John M. - Bassler, Ray S.
    Publication info: Washington,Govt. Print. Off.,1900.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  2. The upper Ordovician rocks of Kentucky and their bryozoa. By John M. Nickles. 1905.
    By: Nickles, John M.
    Publication info: Louisville [Ky.] :Printed by the Geo. G. Fetter company,1905.
    Contributed by: University of California Libraries (
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