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	    <topic authority="CDU/BNM (v. 8)">Biología</topic>
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        <related type="narrower">
        <topic>Antropología física</topic>
    </related>
        <related type="narrower">
        <topic>Biología (teoría y principios generales)</topic>
    </related>
        <related type="narrower">
        <topic>Ecología y biodiversidad</topic>
    </related>
        <related type="narrower">
        <topic>Origen de las especies</topic>
    </related>
        <related type="narrower">
        <topic>Bioorgánica</topic>
    </related>
        <related type="narrower">
        <topic>Botánica</topic>
    </related>
        <related type="narrower">
        <topic>Botánica sistemática</topic>
    </related>
        <related type="narrower">
        <topic>Zoología general</topic>
    </related>
        <related type="narrower">
        <topic>Etología</topic>
    </related>
        <related type="narrower">
        <topic>Invertebrados</topic>
    </related>
        <related type="narrower">
        <topic>Articulados</topic>
    </related>
        <related type="narrower">
        <topic>Entomología</topic>
    </related>
        <related type="narrower">
        <topic>Vertebrados</topic>
    </related>
        <related type="narrower">
        <topic>Aves. Pájaros en general</topic>
    </related>
        <related type="narrower">
        <topic>Mamíferos placentados y no placentados</topic>
    </related>
        <related type="narrower">
        <topic>Primates</topic>
    </related>
    
    
    
    
    
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