Foster, A.S. <br/><br/>
Comparative morphology of vascular plants  A.S. Foster. 

 - 2nd ed. 
 - San Francisco  W.H. Freeman Company  n.d. 
 - viii, 751p., ill. 26cm. 
<br/><br/><label>ISBN: </label>0-7167-0712-8. 
<br/><br/><label>Dewey Class. No.: </label>581.4,  / F71C