Lawrence, George H.M <br/><br/>
Taxonomy of vascular plants 

 - New York  Macmillan  1951 
 - xiii,823 p.  Illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOTANY
<br/><br/><label>Dewey Class. No.: </label>581.0724  / LAW