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  1. The pelagic Tunicata / by William E. Ritter and Edith S. Byxbee.
    By: Ritter, William Emerson, - Byxbee, Edith Sumner,
    Publication info: Cambridge :Printed for the Museum,1905.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
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