Textbook of zoology / 
edited by A. J. Marshall and W. D. Williams 
 - 7th edition 
 - London :  English Language Book Society and Macmillan,  1978 
 - xix, 874 pages :  illustrations ;  25 cm 
 -  v. 1: Invertebrates .
<br/><br/>includes bibliographical reference and index 
<br/><br/><label>ISBN: </label>0333141075 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology
<br/><br/><label>LC Class. No.: </label>QL47.2 T49