Walker,John Charles <br/><br/>
Plant Pathology  / 
John Charles Walker 
 - 3rd Ed 
 - New York :  McGraw-Hill,  c1969 
 - xi, 819p. :  ill. ;  21cm. 
<br/><br/>Includes Index 
<br/><br/><label>Subjects--Topical Terms: </label><br/> 	      Plant diseases. 
<br/><br/><label>Dewey Class. No.: </label>581.2  / WAP 1969