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  1. By: Solms-Laubach, Hermann, Graf zu,
    Publication info: Leipzig, W. Engelmann, 1881
    Holding Institution: MBLWHOI Library
    Subjects: Algae  Coralline algae  Italy  Naples, Bay of  Protochordates  
  2. By: Spengel, Johann Wilhelm,
    Publication info: Berlin, Verlag von R. Friedländer & Sohn, 1893
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Enteropneusta  Hemichordata  Naples, Bay of (Italy)  Protochordates