Walker, John Charles, <br/><br/>
Plant pathology / 
by John Charles Walker. 
 - 3rd ed 
 - New York :  McGraw-Hill,  1969. 
 - xi, 819 pages :  illustrations ;  24 cm. 
 - McGraw-Hill publications in the agricultural sciences .
<br/><br/><label>ISBN: </label>007067860X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fieldcrops--Diseases and pests.