Webb, Joseph Ernest. <br/><br/>
Guide to invertebrate animals / 
J.E. Webb, J.A. Wallwork and J.H. Elgood. 
 - 2nd ed. 
 - London :  Macmillan,  1978. 
 - 305 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates--Classification.
<br/><br/><label>Dewey Class. No.: </label>592.0012 WEB