NIEUWKOOP, Pieter D. <br/><br/>
The Epigenetic Nature of Early Chordate Development. 

 - Cambridge.  Cambridge University Press.  1985 
 - ix, 373p. 
<br/><br/><label>ISBN: </label>0 521 25107 9 
<br/><br/><label>Dewey Class. No.: </label>596.009