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    <skos:prefLabel xml:lang="en">MOLLUSKS</skos:prefLabel>
    <gcmd:reference gcmd:text="Burn, David M. Animal World.  1980.  Octopus Books Ltd. London." xml:lang="en"/>
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    <skos:definition xml:lang="en">Mollusks are fundamentally bilaterally symmetrical coelomates withsegmentation almost or completely absent; muscular foot, typicallyventral; head usually with concentrated sense organs; dorsal mantle oftissue folded to form a cavity with usually houses gills; well developedblood vascular system and usually an internal or external calcareousshell.</skos:definition>
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