Usher, George <br/><br/>
A dictionary of plants used by man / 
by George Usher 
 - London :  Constable,  1974 
 - 619 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0094579202 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany, Economic--Dictionaries