Walker, John Charles <br/><br/>
Plant pathology  / 
by John Charles Walker 
 - 3 
 - New York  :   McGraw-Hill 
 - 819 p. 
<br/><br/><label>LCCN: </label>206567 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fitopatología
<br/><br/><label>Dewey Class. No.: </label>PA 632 W3 1969