Walker, John Charles. <br/><br/>
Plant pathology 

 - New York :  McGraw-Hill,  1950 
 - 699 p.  : ilus. 
<br/><br/><label>LCCN: </label>51113 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fitopatología.
<br/><br/><label>Dewey Class. No.: </label>632  / W45p