Guide To The Mollusca 

 - Exhibitedin the zoological department , british museum ( Natural History ) 
 - London  Printed by order of the trustees   1923 
 - 55p. : ill ,   21 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science <br/>1923
<br/><br/><label>Universal Decimal Class. No.: </label>2  / H21