Textbook of zoology : Invertebrates / edited by A.J. Marshall, W.D. Williams .
– 7th ed. .
– London : English language and book , 1974.
xviii, 874 p. : ill.
includes index.
ISBN 0-333-13678-0 :
1. Zoology – Invertebrates
I. Marshall, A.J., ed. I. Williams, W.D. , ed.