Lawrence, George Hill Mathewson <br/><br/>
An introduction to plant taxonomy. 
Illustrations by Marion Ruff Sheehan. 
 - New York  Macmillan  c1955. 
 - 179 p.  illus. 
<br/><br/><label>LCCN: </label>55000879 /L 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Classification.--North America
<br/><br/><label>LC Class. No.: </label>QK95  / .L3 
<br/><br/><label>Dewey Class. No.: </label>580.12