Walker, John Charles <br/><br/>
Plant pathology 
John Charles Walker 
 - NY  McGraw-Hill  1950 
 - 699 P. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PLANT PATHOLOGY
<br/><br/><label>Dewey Class. No.: </label>581.2  / WAL