Ayyar, M. Ekambaranatha, and Ananthakrishnan, T. N. A Manual of Zoology : Vol. 1, Part - 2 ( Invertebrata ) - Chennai S. Viswanathan (Printers & Publishers) Pvt. Ltd. 1954 - 424 ISBN: 9788187156666 Publisher. No.: Ananda Book Depot Chennai Subjects--Personal Names: Zoology Subjects--Topical Terms: Zoology