Back and Braithwaites inverterbrates zoology/ 
Robert L.Wallace...[et al.]. 
 - 4th ed. 
 - London:  Macmillan Publishers,  1989. 
 - xii,337p.; 
<br/><br/><label>ISBN: </label>0023077638 
<br/><br/><label>Subjects--Topical Terms: </label><br/>beck and braithwaites
<br/><br/><label>LC Class. No.: </label>QL362.W33 1989