Lawrence, George Hill Mathewson,  1910- <br/><br/>
Taxonomy of vascular plants. 

 - New York,  Macmillan  [1951] 
 - xii,823 p.  ill.  22 cm. 
<br/><br/><label>Source: </label>B-4883 
<br/><br/><label>LCCN: </label>51007352  
<br/><br/><label>Nat. Bib. No.: </label>GB52-10674 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Classification.
<br/><br/><label>LC Class. No.: </label>QK95  / .L28   1951 
<br/><br/><label>Dewey Class. No.: </label>580.12