Berrill, N. J. (Norman John),  1903- <br/><br/>
The Tunicata with an account of the British species / 
N. J. (Norman John) Berrill. 
 - Sold by Quaritch :  London,  1950. 
 - iii, 354 p. :  ill. ;  23 cm. 
 - Ray Society (Series) ; no.133. .
<br/><br/>Bibliography : p. 323-346. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ascidiacea.