DAVID, <br/><br/>
DICTIONARY OF SCIENTISTS  Textual Documents 

 - 2. 
 - UK:  CAMBRIDGE UNIVERSITY PRESS. 
 - 428. 
<br/><br/><label>ISBN: </label>0-521-00062-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Subjects--Index Terms: </label>Botany 
<br/><br/><label>Dewey Class. No.: </label>581