Percival, John.  <br/><br/>
Agricultural botany :  theoretical and practical / 
John Percival. 
 - 8th ed. 
 - London :  Duckworth,  c 1954. 
 - x, 839 p. :  ill. ;  20 cm. 
<br/><br/> Includes index. 
<br/><br/>333  333 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic botany.
<br/><br/><label>Dewey Class. No.: </label>581.6 / P412a