Lawrence, George H M <br/><br/>
Taxonomy of vascular plants / 
Lawrence, George H M 
 -  Macmillan Company, New York,  1966 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Taxonomy; Botany
<br/><br/><label>Dewey Class. No.: </label>580.12 LAW-T