Asimov, Isaac,  1920- <br/><br/>
Photosynthesis 
Isaac Asimov 
 - London;  George Allen & Unwin;  1968 
 - 193 pages:  illustrations;  23cm. 
<br/><br/><label>ISBN: </label>004541002X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photosynthesis