Kotpal, R. L. <br/><br/>
Annelida :  a text-book for college & university students / 
R. L. Kotpal 
 - 11th ed. 
 - Meerut :  Rakesh K. Rastogi,  1983 
 - 263 p. :  ill. ;  18 cm. 
<br/><br/> Published for Rastogi Publications 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Annelida