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  1. Larvae of marine bivalves and echinoderms / V.L. Kasyanov ... [et al.] ; scientific editor, David L. Pawson.
    By: Kasianov, V. L. - Pawson, David L.
    Publication info: Washington, D.C. :Smithsonian Institution Libraries,1998.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  2. Marine flora and fauna of the northeastern United States. Holothuroidea / Echinodermata :
    By: Pawson, David L.
    Publication info: Washington, D.C. :U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service,[1977]
    Contributed by: Penn State University (archive.org)
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