The Echinoderms newsletter / 
Departament of Invertebrate Zoology (Echinoderms) ... [et al.]. 
 - Washington,  Dept. of Invertebrate Zoology (Echinoderms) ;  National Museum of Natural History ;  Smithsonian Institution,  1976. 
 -  28 cm. 
<br/><br/><br/>Inglés 
<br/><br/><label>LCCN: </label>sc 83007036  
<br/><br/><label>Subjects--Index Terms: </label>Echinodermata Equinodermos 
<br/><br/><label>Dewey Class. No.: </label>593.9