Barrington, E J W <br/><br/>
Biology of hemichordata and protochordata 

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 - Oliver & Boyd, Edinburgh  1965 
 - 176 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Echinodermata-- Hemichordate
<br/><br/><label>Dewey Class. No.: </label>593.9  BAR-B