Keeble Frederick <br/><br/>
The Oring and nature of the green cells of convoluta roscoffensis 

 -  University College 
 - 219p. : ill , 24 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Universal Decimal Class. No.: </label>5  / O1