Nair, P.K.G. and Achar, K.P. <br/><br/>
A Manual of Practical Zoology 
Volume 2 Chordata 
 - Bombay  Himalaya Publuishing House  1994 
 - 145 
<br/><br/><label>ISBN: </label>8170408784 
<br/><br/><label>Publisher. No.: </label> Himalaya Publishing House 
<br/><br/><label>Subjects--Personal Names: </label> Zoology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology