Kotpal, R.L. <br/><br/>
Modern textbook of zoology  invertebrates 
R.L. Kotpal. 
 - 8th  ed. 
 - Meerut  Rastogi Publications  2000 
 - xvii, 807p.: ill.; 24cm. 
<br/><br/><label>ISBN: </label>81-7133-469-5. 
<br/><br/><label>Dewey Class. No.: </label>592  / K95M