ANANTHAKRISHNAN, T.N. EKAMBARANATHA AYYAR, M. <br/><br/>
MANUAL OF ZOOLOGY, Volume I-Part 1: INVERTEBRATA: PROTOZOA TO ANNELIDA 

 - Madras  S.Viswanathan Publishers, Madras   1997 
<br/><br/><label>Dewey Class. No.: </label>592  / EKA/MA