Yadav, P.R <br/><br/>
Textbook of Embroyology / 
by P.R. Yadav 
 - New Delhi:  Campus Book Internaional,  2001 
 - p.381 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology<br/>Chordata
<br/><br/><label>Dewey Class. No.: </label>596  / YAD-T