The sea urchin 
Papers by Paul Gross, Tom Humphreys, Everett Anderson ... (et al.) 
 - New York  MSS Information Corporation  1972 
 - 3 v. : ill. ; 24 cm. 
<br/><br/> Vols. 2-3 by J. P. Chamberlain and others. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0842270086 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Embryology<br/>Sea urchin embryo