Norstog, Knut. <br/><br/>
Plant biology 

 - Philadelphia, Pa. :  Saunders,  1976 
 - 585 p.  : ilus. 
<br/><br/><label>LCCN: </label>32948 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica.
<br/><br/><label>Dewey Class. No.: </label>581.1  / N67