Lal, S.S. <br/><br/>
A Textbook of practical zoology  invertebrate 
S.S. Lal. 
 - 7th  rev. ed. 
 - Meerut  Rastogi Publications  2000 
 - xi, 367p.: ill.; 26cm. 
<br/><br/> For undergraduate students. 
<br/><br/><label>ISBN: </label>81-7133-488-1. 
<br/><br/><label>Dewey Class. No.: </label>592  / L14T