E.K.Iyyar & N.Annanthakrishnan <br/><br/>
Manual of Zoology Volume I:Invertebrate  Part I (Protozoa to annelida) 

 - 5th Ed 
 - Chennai  S.Viswanathan Pvt Ltd  1982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manual of Zoology Volume I:Invertebrate  Part I (Protozoa to annelida)