Thompson, T. E. <br/><br/>
Molluscs :  Benthic opisthobranchs (Mollusca Gastropoda) keys and notes for the identification of the species / 
T. E. Thompson. 
 - 2nd ed. 
 - Leiden :  E. J. Brill,  1988. 
 - 356 p. :  ill. ;  22 cm. 
 - Synopses of the British Fauna ;  no. 8 .
<br/><br/><label>ISBN: </label>9004084398 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Opisthobranchia--British Isles.<br/>Opisthobranchia--Identification.--British<br/>Mollusks--Identification.<br/>Mollusks--British Isles--Identification.