Percival, John. <br/><br/>
Agricultural botany  : theoretical and practical 

 - 8 ed. 
 - London :  Duckworth,  1936 
 - 839 p.  : ilus. 
<br/><br/><label>LCCN: </label>42902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica agrícola.
<br/><br/><label>Dewey Class. No.: </label>630.28  / P47 1936