Alexander, R. McNeill. <br/><br/>
The chordates / 
R. Alexander McNeill. 
 - 2nd ed. 
 - New York :  Cambridge University Press,  1981. 
 - 510 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0521281415 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chordata.